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| File name: | 1sass.exe |
| Full analysis: | https://app.any.run/tasks/0e898918-2311-4e31-87f1-27ed1d48f42d |
| Verdict: | Malicious activity |
| Threats: | Dharma is advanced ransomware that has been observed in the wild since 2016. It is considered to be the second most profitable RaaS operation by the FBI. The malware targets hospitals and state organizations, encrypts files, and demands a payment to restore access to lost information. |
| Analysis date: | March 21, 2019, 06:24:29 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386, for MS Windows |
| MD5: | 5A014011EE7F1417BE6ADD805AEE2D86 |
| SHA1: | B830F212B0D78C0510C6EAEC994F149E8D249B30 |
| SHA256: | 77092B14FFA8CDFCBEFB03B46C39FEB034573626D2F3BCF4BD7999DF730E985E |
| SSDEEP: | 1536:mBwl+KXpsqN5vlwWYyhY9S4An+IeQS0TWOYjfWe5ji4PVxS:Qw+asqN5aW/hLphFDTHYjp/P |
MALICIOUS
Writes to a start menu file
- 1sass.exe (PID: 3116)
- 1sass.exe (PID: 4092)
Deletes shadow copies
- cmd.exe (PID: 3660)
- cmd.exe (PID: 2936)
- cmd.exe (PID: 3792)
Changes the autorun value in the registry
- 1sass.exe (PID: 3116)
- 1sass.exe (PID: 4092)
Runs app for hidden code execution
- 1sass.exe (PID: 3116)
- 1sass.exe (PID: 4092)
Modifies files in Chrome extension folder
- 1sass.exe (PID: 4092)
Actions looks like stealing of personal data
- 1sass.exe (PID: 4092)
Renames files like Ransomware
- 1sass.exe (PID: 4092)
SUSPICIOUS
Creates files in the user directory
- 1sass.exe (PID: 3116)
- 1sass.exe (PID: 4092)
Executable content was dropped or overwritten
- 1sass.exe (PID: 4092)
- 1sass.exe (PID: 3116)
Reads the cookies of Google Chrome
- 1sass.exe (PID: 4092)
Creates files in the Windows directory
- 1sass.exe (PID: 4092)
Starts CMD.EXE for commands execution
- 1sass.exe (PID: 4092)
- 1sass.exe (PID: 3116)
Application launched itself
- 1sass.exe (PID: 3116)
Reads the cookies of Mozilla Firefox
- 1sass.exe (PID: 4092)
Creates files in the program directory
- 1sass.exe (PID: 3116)
- 1sass.exe (PID: 4092)
INFO
No info indicators.
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .dll | | | Win32 Dynamic Link Library (generic) (43.5) |
|---|---|---|
| .exe | | | Win32 Executable (generic) (29.8) |
| .exe | | | Generic Win/DOS Executable (13.2) |
| .exe | | | DOS Executable Generic (13.2) |
EXIF
EXE
| Subsystem: | Windows GUI |
|---|---|
| SubsystemVersion: | 5.1 |
| ImageVersion: | - |
| OSVersion: | 5.1 |
| EntryPoint: | 0xa9d0 |
| UninitializedDataSize: | - |
| InitializedDataSize: | 54272 |
| CodeSize: | 40448 |
| LinkerVersion: | 10 |
| PEType: | PE32 |
| TimeStamp: | 2017:03:03 00:49:06+01:00 |
| MachineType: | Intel 386 or later, and compatibles |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 02-Mar-2017 23:49:06 |
| Debug artifacts: |
|
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: | 0x000000C8 |
PE Headers
| Signature: | PE |
|---|---|
| Machine: | IMAGE_FILE_MACHINE_I386 |
| Number of sections: | 3 |
| Time date stamp: | 02-Mar-2017 23:49:06 |
| Pointer to Symbol Table: | 0x00000000 |
| Number of symbols: | 0 |
| Size of Optional Header: | 0x00E0 |
| Characteristics: |
|
Sections
Name | Virtual Address | Virtual Size | Raw Size | Charateristics | Entropy |
|---|---|---|---|---|---|
.text | 0x00001000 | 0x00009C25 | 0x00009E00 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 5.96531 |
.rdata | 0x0000B000 | 0x00002636 | 0x00002800 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 7.78504 |
.data | 0x0000E000 | 0x0000AAD5 | 0x0000A800 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 7.98231 |
Imports
KERNEL32.dll |
Total processes
48
Monitored processes
12
Malicious processes
5
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process |
|---|---|---|---|---|
| 3116 | "C:\Users\admin\AppData\Local\Temp\1sass.exe" | C:\Users\admin\AppData\Local\Temp\1sass.exe | explorer.exe | |
User: admin Integrity Level: MEDIUM Exit code: 0 | ||||
| 3660 | "C:\Windows\system32\cmd.exe" | C:\Windows\system32\cmd.exe | — | 1sass.exe |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Command Processor Exit code: 2 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850) | ||||
| 2500 | mode con cp select=1251 | C:\Windows\system32\mode.com | — | cmd.exe |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: DOS Device MODE Utility Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
| 3468 | vssadmin delete shadows /all /quiet | C:\Windows\system32\vssadmin.exe | — | cmd.exe |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Command Line Interface for Microsoft® Volume Shadow Copy Service Exit code: 2 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
| 4092 | "C:\Users\admin\AppData\Local\Temp\1sass.exe" -a | C:\Users\admin\AppData\Local\Temp\1sass.exe | 1sass.exe | |
User: admin Integrity Level: HIGH | ||||
| 2936 | "C:\Windows\system32\cmd.exe" | C:\Windows\system32\cmd.exe | — | 1sass.exe |
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Windows Command Processor Exit code: 0 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850) | ||||
| 3792 | "C:\Windows\system32\cmd.exe" | C:\Windows\system32\cmd.exe | — | 1sass.exe |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Command Processor Exit code: 1 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850) | ||||
| 3600 | mode con cp select=1251 | C:\Windows\system32\mode.com | — | cmd.exe |
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: DOS Device MODE Utility Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
| 3948 | mode con cp select=1251 | C:\Windows\system32\mode.com | — | cmd.exe |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: DOS Device MODE Utility Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
| 2984 | vssadmin delete shadows /all /quiet | C:\Windows\system32\vssadmin.exe | — | cmd.exe |
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Command Line Interface for Microsoft® Volume Shadow Copy Service Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
Total events
380
Read events
373
Write events
7
Delete events
0
Modification events
| (PID) Process: | (3116) 1sass.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | 1sass.exe |
Value: C:\Users\admin\AppData\Roaming\1sass.exe | |||
| (PID) Process: | (3116) 1sass.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | 1sass.exe |
Value: C:\Users\admin\AppData\Roaming\1sass.exe | |||
| (PID) Process: | (3116) 1sass.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | UNCAsIntranet |
Value: 0 | |||
| (PID) Process: | (3116) 1sass.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | AutoDetect |
Value: 1 | |||
| (PID) Process: | (4092) 1sass.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | 1sass.exe |
Value: C:\Windows\System32\1sass.exe | |||
Executable files
5
Suspicious files
1 307
Text files
4
Unknown types
50
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 3116 | 1sass.exe | C:\$Recycle.Bin\S-1-5-21-1302019708-1500728564-335382590-1000\desktop.ini | — | |
MD5:— | SHA256:— | |||
| 3116 | 1sass.exe | C:\Users\admin\AppData\Local\VirtualStore\Program Files\Adobe\Acrobat Reader DC\IrakHau.htm | — | |
MD5:— | SHA256:— | |||
| 3116 | 1sass.exe | C:\Users\admin\AppData\Local\VirtualStore\Program Files\Adobe\Acrobat Reader DC\Leame.htm | — | |
MD5:— | SHA256:— | |||
| 3116 | 1sass.exe | C:\Users\admin\AppData\Local\VirtualStore\Program Files\Adobe\Acrobat Reader DC\Berime.htm | — | |
MD5:— | SHA256:— | |||
| 3116 | 1sass.exe | C:\Users\admin\AppData\Local\VirtualStore\Program Files\Adobe\Acrobat Reader DC\Benioku.htm | — | |
MD5:— | SHA256:— | |||
| 3116 | 1sass.exe | C:\Users\admin\AppData\Local\VirtualStore\Program Files\Adobe\Acrobat Reader DC\Reader\AcroApp\CAT\AppCenter_R.aapp | — | |
MD5:— | SHA256:— | |||
| 3116 | 1sass.exe | C:\Users\admin\AppData\Local\VirtualStore\Program Files\Adobe\Acrobat Reader DC\Reader\AcroApp\CAT\Comments.aapp | — | |
MD5:— | SHA256:— | |||
| 3116 | 1sass.exe | C:\Users\admin\AppData\Local\VirtualStore\Program Files\Adobe\Acrobat Reader DC\Reader\AcroApp\CAT\Combine_R_RHP.aapp | — | |
MD5:— | SHA256:— | |||
| 3116 | 1sass.exe | C:\Users\admin\AppData\Local\VirtualStore\Program Files\Adobe\Acrobat Reader DC\Leggimi.htm | — | |
MD5:— | SHA256:— | |||
| 3116 | 1sass.exe | C:\Users\admin\AppData\Local\VirtualStore\Program Files\Adobe\Acrobat Reader DC\LeesMij.htm | — | |
MD5:— | SHA256:— | |||
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HTTP(S) requests
0
TCP/UDP connections
0
DNS requests
0
Threats
0
HTTP requests
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