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File name:

Letter(05-02).exe.bin

Full analysis: https://app.any.run/tasks/5478e9df-7b2b-4143-8bcd-1d48af286893
Verdict: Malicious activity
Threats:

Agent Tesla is spyware that collects information about the actions of its victims by recording keystrokes and user interactions. It is falsely marketed as a legitimate software on the dedicated website where this malware is sold.

Analysis date: March 31, 2020, 06:01:21
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:
stealer
agenttesla
Indicators:
MIME: application/x-dosexec
File info: PE32 executable (GUI) Intel 80386, for MS Windows
MD5:

1414BCB24C26EF6751929A9E7AAB11AA

SHA1:

0ED9DE8C288C3E7CD4078B02AE1B7C4DD103ED5C

SHA256:

637ED1175F23DC26A15A04745613C8091A30C070C4427AE9E1221D141FCBBFCF

SSDEEP:

6144:nK6g8ITNR76Q7hN0wjXLCpYRFTBXccEdUc8kBtLpVuqv2q/YgfcVkliOG:nKNsQ7FjGpkcDec8kBdpVuGIkliX

ANY.RUN is an interactive service which provides full access to the guest system. Information in this report could be distorted by user actions and is provided for user acknowledgement as it is. ANY.RUN does not guarantee maliciousness or safety of the content.
  • MALICIOUS

    • Application was dropped or rewritten from another process

      • lnCAENRgjxLzOUQnma5.exe (PID: 3768)
    • AGENTTESLA detected

      • RegAsm.exe (PID: 3380)
    • Starts Visual C# compiler

      • lnCAENRgjxLzOUQnma5.exe (PID: 3768)
    • Actions looks like stealing of personal data

      • RegAsm.exe (PID: 3380)
  • SUSPICIOUS

    • Reads Environment values

      • RegAsm.exe (PID: 3380)
    • Executable content was dropped or overwritten

      • Letter(05-02).exe.bin.exe (PID: 3736)
    • Connects to SMTP port

      • RegAsm.exe (PID: 3380)
    • Modifies files in Chrome extension folder

      • chrome.exe (PID: 3232)
  • INFO

    • Reads settings of System Certificates

      • RegAsm.exe (PID: 3380)
    • Reads the hosts file

      • chrome.exe (PID: 3092)
      • chrome.exe (PID: 3232)
    • Manual execution by user

      • chrome.exe (PID: 3232)
    • Application launched itself

      • chrome.exe (PID: 3232)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

TRiD

.exe | Win32 Executable MS Visual C++ (generic) (42.2)
.exe | Win64 Executable (generic) (37.3)
.dll | Win32 Dynamic Link Library (generic) (8.8)
.exe | Win32 Executable (generic) (6)
.exe | Generic Win/DOS Executable (2.7)

EXIF

EXE

MachineType: Intel 386 or later, and compatibles
TimeStamp: 2014:10:31 04:28:47+01:00
PEType: PE32
LinkerVersion: 11
CodeSize: 27136
InitializedDataSize: 367104
UninitializedDataSize: -
EntryPoint: 0x69d0
OSVersion: 6.3
ImageVersion: 6.3
SubsystemVersion: 5.1
Subsystem: Windows GUI

Summary

Architecture: IMAGE_FILE_MACHINE_I386
Subsystem: IMAGE_SUBSYSTEM_WINDOWS_GUI
Compilation Date: 31-Oct-2014 03:28:47
Detected languages:
  • English - United States
Debug artifacts:
  • wextract.pdb

DOS Header

Magic number: MZ
Bytes on last page of file: 0x0090
Pages in file: 0x0003
Relocations: 0x0000
Size of header: 0x0004
Min extra paragraphs: 0x0000
Max extra paragraphs: 0xFFFF
Initial SS value: 0x0000
Initial SP value: 0x00B8
Checksum: 0x0000
Initial IP value: 0x0000
Initial CS value: 0x0000
Overlay number: 0x0000
OEM identifier: 0x0000
OEM information: 0x0000
Address of NE header: 0x000000F0

PE Headers

Signature: PE
Machine: IMAGE_FILE_MACHINE_I386
Number of sections: 5
Time date stamp: 31-Oct-2014 03:28:47
Pointer to Symbol Table: 0x00000000
Number of symbols: 0
Size of Optional Header: 0x00E0
Characteristics:
  • IMAGE_FILE_32BIT_MACHINE
  • IMAGE_FILE_EXECUTABLE_IMAGE

Sections

Name
Virtual Address
Virtual Size
Raw Size
Charateristics
Entropy
.text
0x00001000
0x00006964
0x00006A00
IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
6.35038
.data
0x00008000
0x00001A8C
0x00000400
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
3.17593
.idata
0x0000A000
0x0000107C
0x00001200
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
5.04714
.rsrc
0x0000C000
0x00057854
0x00057A00
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
7.91235
.reloc
0x00064000
0x000008C0
0x00000A00
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ
6.37329

Resources

Title
Entropy
Size
Codepage
Language
Type
0
2.37086
34
Latin 1 / Western European
English - United States
RT_GROUP_ICON
1
5.05393
1511
Latin 1 / Western European
English - United States
RT_MANIFEST
2
3.05105
296
Latin 1 / Western European
English - United States
RT_ICON
63
2.48958
140
Latin 1 / Western European
English - United States
RT_STRING
76
3.2674
1312
Latin 1 / Western European
English - United States
RT_STRING
77
3.29977
1484
Latin 1 / Western European
English - United States
RT_STRING
80
3.27174
1200
Latin 1 / Western European
English - United States
RT_STRING
83
3.2912
1098
Latin 1 / Western European
English - United States
RT_STRING
85
3.13591
974
Latin 1 / Western European
English - United States
RT_STRING
2001
3.25575
754
Latin 1 / Western European
English - United States
RT_DIALOG

Imports

ADVAPI32.dll
COMCTL32.dll
Cabinet.dll
GDI32.dll
KERNEL32.dll
USER32.dll
VERSION.dll
msvcrt.dll
No data.
screenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
81
Monitored processes
43
Malicious processes
3
Suspicious processes
0

Behavior graph

Click at the process to see the details
drop and start start letter(05-02).exe.bin.exe lncaenrgjxlzouqnma5.exe no specs csc.exe no specs cvtres.exe no specs csc.exe no specs cvtres.exe no specs #AGENTTESLA regasm.exe chrome.exe chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
3736"C:\Users\admin\AppData\Local\Temp\Letter(05-02).exe.bin.exe" C:\Users\admin\AppData\Local\Temp\Letter(05-02).exe.bin.exe
explorer.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
3768C:\Users\admin\AppData\Local\Temp\IXP000.TMP\lnCAENRgjxLzOUQnma5.exeC:\Users\admin\AppData\Local\Temp\IXP000.TMP\lnCAENRgjxLzOUQnma5.exeLetter(05-02).exe.bin.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
2844"C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\admin\AppData\Local\Temp\orjvidzi.cmdline"C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exelnCAENRgjxLzOUQnma5.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Visual C# Command Line Compiler
Exit code:
0
Version:
4.7.3062.0 built by: NET472REL1
1780C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\admin\AppData\Local\Temp\RES6D87.tmp" "c:\Users\admin\AppData\Local\Temp\CSCC3606EE8ED154CF691334968EE22CFA5.TMP"C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.execsc.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Microsoft® Resource File To COFF Object Conversion Utility
Exit code:
0
Version:
12.00.52519.0 built by: VSWINSERVICING
3624"C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\admin\AppData\Local\Temp\tvrpjb5g.cmdline"C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exelnCAENRgjxLzOUQnma5.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Visual C# Command Line Compiler
Exit code:
0
Version:
4.7.3062.0 built by: NET472REL1
3552C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\admin\AppData\Local\Temp\RES6EA0.tmp" "c:\Users\admin\AppData\Local\Temp\CSCC6AA494B86EC4D5E91502284288339A5.TMP"C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.execsc.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Microsoft® Resource File To COFF Object Conversion Utility
Exit code:
0
Version:
12.00.52519.0 built by: VSWINSERVICING
3380"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
lnCAENRgjxLzOUQnma5.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Microsoft .NET Assembly Registration Utility
Version:
4.7.3062.0 built by: NET472REL1
3232"C:\Program Files\Google\Chrome\Application\chrome.exe" C:\Program Files\Google\Chrome\Application\chrome.exe
explorer.exe
User:
admin
Company:
Google LLC
Integrity Level:
MEDIUM
Description:
Google Chrome
Exit code:
3221225547
Version:
75.0.3770.100
3964"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\admin\AppData\Local\Google\Chrome\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win32 --annotation=prod=Chrome --annotation=ver=75.0.3770.100 --initial-client-data=0x7c,0x80,0x84,0x78,0x88,0x6d50a9d0,0x6d50a9e0,0x6d50a9ecC:\Program Files\Google\Chrome\Application\chrome.exechrome.exe
User:
admin
Company:
Google LLC
Integrity Level:
MEDIUM
Description:
Google Chrome
Exit code:
0
Version:
75.0.3770.100
3580"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=watcher --main-thread-id=3132 --on-initialized-event-handle=324 --parent-handle=328 /prefetch:6C:\Program Files\Google\Chrome\Application\chrome.exechrome.exe
User:
admin
Company:
Google LLC
Integrity Level:
MEDIUM
Description:
Google Chrome
Exit code:
0
Version:
75.0.3770.100
Total events
681
Read events
584
Write events
0
Delete events
0

Modification events

No data
Executable files
1
Suspicious files
33
Text files
293
Unknown types
13

Dropped files

PID
Process
Filename
Type
2844csc.exeC:\Users\admin\AppData\Local\Temp\CSCC3606EE8ED154CF691334968EE22CFA5.TMP
MD5:
SHA256:
2844csc.exeC:\Users\admin\AppData\Local\Temp\orjvidzi.dll
MD5:
SHA256:
1780cvtres.exeC:\Users\admin\AppData\Local\Temp\RES6D87.tmp
MD5:
SHA256:
2844csc.exeC:\Users\admin\AppData\Local\Temp\orjvidzi.out
MD5:
SHA256:
3552cvtres.exeC:\Users\admin\AppData\Local\Temp\RES6EA0.tmp
MD5:
SHA256:
3624csc.exeC:\Users\admin\AppData\Local\Temp\tvrpjb5g.dll
MD5:
SHA256:
3624csc.exeC:\Users\admin\AppData\Local\Temp\tvrpjb5g.out
MD5:
SHA256:
3232chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\BrowserMetrics\BrowserMetrics-5E82DCF2-CA0.pma
MD5:
SHA256:
3736Letter(05-02).exe.bin.exeC:\Users\admin\AppData\Local\Temp\IXP000.TMP\lnCAENRgjxLzOUQnma5text
MD5:C5EC6ED32D5F693983DEEF893B965D43
SHA256:731972A6847D4E49571F9F4EABB8E28BE363C2DFDBDD2D0ECB09B7CCCD240643
3232chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\Feature Engagement Tracker\EventDB\LOG.old
MD5:
SHA256:
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
9
TCP/UDP connections
35
DNS requests
19
Threats
0

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
3092
chrome.exe
GET
208.91.198.143:80
http://208.91.198.143/
US
shared
3092
chrome.exe
GET
208.91.198.143:80
http://208.91.198.143/
US
shared
3092
chrome.exe
GET
208.91.198.143:80
http://208.91.198.143/
US
shared
3092
chrome.exe
GET
302
172.217.23.142:80
http://redirector.gvt1.com/edgedl/chromewebstore/L2Nocm9tZV9leHRlbnNpb24vYmxvYnMvOTRmQUFXVHlhaGJaUTdMLWtCSkNJUl9ZQQ/1.0.0.5_nmmhkkegccagdldgiimedpiccmgmieda.crx
US
html
520 b
whitelisted
3092
chrome.exe
GET
302
172.217.23.142:80
http://redirector.gvt1.com/edgedl/chromewebstore/L2Nocm9tZV9leHRlbnNpb24vYmxvYnMvOWVmQUFXS041NV9ZVXlJVWwxbGc5TUM4dw/7519.422.0.3_pkedcjkdefgpdelpbcmbmeomcjbeemfm.crx
US
html
525 b
whitelisted
3092
chrome.exe
GET
200
74.125.99.91:80
http://r5---sn-hpa7kn7s.gvt1.com/edgedl/chromewebstore/L2Nocm9tZV9leHRlbnNpb24vYmxvYnMvOTRmQUFXVHlhaGJaUTdMLWtCSkNJUl9ZQQ/1.0.0.5_nmmhkkegccagdldgiimedpiccmgmieda.crx?cms_redirect=yes&mh=QJ&mip=185.128.27.151&mm=28&mn=sn-hpa7kn7s&ms=nvh&mt=1585634475&mv=m&mvi=4&pl=24&shardbypass=yes
US
crx
293 Kb
whitelisted
3092
chrome.exe
GET
208.91.198.143:80
http://208.91.198.143/
US
shared
3092
chrome.exe
GET
200
74.125.153.27:80
http://r5---sn-hpa7zned.gvt1.com/edgedl/chromewebstore/L2Nocm9tZV9leHRlbnNpb24vYmxvYnMvOWVmQUFXS041NV9ZVXlJVWwxbGc5TUM4dw/7519.422.0.3_pkedcjkdefgpdelpbcmbmeomcjbeemfm.crx?cms_redirect=yes&mh=bs&mip=185.128.27.151&mm=28&mn=sn-hpa7zned&ms=nvh&mt=1585634475&mv=m&mvi=4&pl=24&shardbypass=yes
US
crx
862 Kb
whitelisted
3092
chrome.exe
GET
208.91.199.225:80
http://us2.smtp.mailhostbox.com/
US
shared
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
3092
chrome.exe
216.58.205.227:443
www.gstatic.com
Google Inc.
US
whitelisted
3092
chrome.exe
216.58.210.10:443
fonts.googleapis.com
Google Inc.
US
whitelisted
3092
chrome.exe
172.217.22.35:443
www.google.com.ua
Google Inc.
US
whitelisted
3092
chrome.exe
216.58.206.3:443
clientservices.googleapis.com
Google Inc.
US
whitelisted
3092
chrome.exe
172.217.16.206:443
ogs.google.com.ua
Google Inc.
US
whitelisted
3092
chrome.exe
172.217.16.141:443
accounts.google.com
Google Inc.
US
suspicious
3092
chrome.exe
172.217.16.142:443
apis.google.com
Google Inc.
US
whitelisted
3092
chrome.exe
172.217.18.110:443
clients2.google.com
Google Inc.
US
whitelisted
3380
RegAsm.exe
208.91.198.143:587
us2.smtp.mailhostbox.com
PDR
US
shared
3092
chrome.exe
208.91.198.143:80
us2.smtp.mailhostbox.com
PDR
US
shared

DNS requests

Domain
IP
Reputation
us2.smtp.mailhostbox.com
  • 208.91.198.143
  • 208.91.199.223
  • 208.91.199.224
  • 208.91.199.225
shared
clientservices.googleapis.com
  • 216.58.206.3
whitelisted
accounts.google.com
  • 172.217.16.141
shared
www.google.com.ua
  • 172.217.22.35
whitelisted
fonts.googleapis.com
  • 216.58.210.10
whitelisted
www.gstatic.com
  • 216.58.205.227
whitelisted
apis.google.com
  • 172.217.16.142
whitelisted
ogs.google.com.ua
  • 172.217.16.206
whitelisted
fonts.gstatic.com
  • 216.58.205.227
whitelisted
clients2.google.com
  • 172.217.18.110
whitelisted

Threats

No threats detected
No debug info