ce962e14e66b08a9d2059caf227f0fc4a6369dc684ebb753e9c8179cdcc090ab

Analysis

max time kernel
114s
max time network
124s
platform
windows10_x64
resource
win10-en-20211014
submitted
30/10/2021, 01:52

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General

Target
39f1303c19a90e8eb92a0569de617627.exe
Size 643KB
Sample211030-caek4sech8
SHA256 ce962e14e66b08a9d2059caf227f0fc4a6369dc684ebb753e9c8179cdcc090ab
MD5 39f1303c19a90e8eb92a0569de617627
SHA1 f2609a50d1234a925cc9e4ffa749fb6da2de03cc
SHA512 486274c50d9c51fa381bb46ef349ba0394daef790bb18fae7d177006a786223c7e47043c6f2452a7eab180440146ae697239382c373e83d3a2f2bd6a31b84004
MD5 SHA1 SHA512

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
892	tdsf.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2732 set thread context of 3944	2732	39f1303c19a90e8eb92a0569de617627.exe	69
PID 892 set thread context of 2028	892	tdsf.exe	79

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
1276	schtasks.exe
1852	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2732	39f1303c19a90e8eb92a0569de617627.exe
Token: SeDebugPrivilege	892	tdsf.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2732 wrote to memory of 3944	2732	39f1303c19a90e8eb92a0569de617627.exe	69
PID 2732 wrote to memory of 3944	2732	39f1303c19a90e8eb92a0569de617627.exe	69
PID 2732 wrote to memory of 3944	2732	39f1303c19a90e8eb92a0569de617627.exe	69
PID 2732 wrote to memory of 3944	2732	39f1303c19a90e8eb92a0569de617627.exe	69
PID 2732 wrote to memory of 3944	2732	39f1303c19a90e8eb92a0569de617627.exe	69
PID 2732 wrote to memory of 3944	2732	39f1303c19a90e8eb92a0569de617627.exe	69
PID 2732 wrote to memory of 3944	2732	39f1303c19a90e8eb92a0569de617627.exe	69
PID 2732 wrote to memory of 3944	2732	39f1303c19a90e8eb92a0569de617627.exe	69
PID 2732 wrote to memory of 3944	2732	39f1303c19a90e8eb92a0569de617627.exe	69
PID 2732 wrote to memory of 3480	2732	39f1303c19a90e8eb92a0569de617627.exe	70
PID 2732 wrote to memory of 3480	2732	39f1303c19a90e8eb92a0569de617627.exe	70
PID 2732 wrote to memory of 3480	2732	39f1303c19a90e8eb92a0569de617627.exe	70
PID 2732 wrote to memory of 3460	2732	39f1303c19a90e8eb92a0569de617627.exe	72
PID 2732 wrote to memory of 3460	2732	39f1303c19a90e8eb92a0569de617627.exe	72
PID 2732 wrote to memory of 3460	2732	39f1303c19a90e8eb92a0569de617627.exe	72
PID 3480 wrote to memory of 1276	3480	cmd.exe	74
PID 3480 wrote to memory of 1276	3480	cmd.exe	74
PID 3480 wrote to memory of 1276	3480	cmd.exe	74
PID 892 wrote to memory of 2028	892	tdsf.exe	79
PID 892 wrote to memory of 2028	892	tdsf.exe	79
PID 892 wrote to memory of 2028	892	tdsf.exe	79
PID 892 wrote to memory of 2028	892	tdsf.exe	79
PID 892 wrote to memory of 2028	892	tdsf.exe	79
PID 892 wrote to memory of 2028	892	tdsf.exe	79
PID 892 wrote to memory of 2028	892	tdsf.exe	79
PID 892 wrote to memory of 2028	892	tdsf.exe	79
PID 892 wrote to memory of 2028	892	tdsf.exe	79
PID 892 wrote to memory of 1512	892	tdsf.exe	80
PID 892 wrote to memory of 1512	892	tdsf.exe	80
PID 892 wrote to memory of 1512	892	tdsf.exe	80
PID 892 wrote to memory of 2292	892	tdsf.exe	81
PID 892 wrote to memory of 2292	892	tdsf.exe	81
PID 892 wrote to memory of 2292	892	tdsf.exe	81
PID 1512 wrote to memory of 1852	1512	cmd.exe	84
PID 1512 wrote to memory of 1852	1512	cmd.exe	84
PID 1512 wrote to memory of 1852	1512	cmd.exe	84

C:\Users\Admin\AppData\Local\Temp\39f1303c19a90e8eb92a0569de617627.exe
"C:\Users\Admin\AppData\Local\Temp\39f1303c19a90e8eb92a0569de617627.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2732
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  PID:3944
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /sc minute /mo 1 /tn "Nano" /tr "'C:\Users\Admin\AppData\Roaming\tdsf\tdsf.exe'" /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3480
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nano" /tr "'C:\Users\Admin\AppData\Roaming\tdsf\tdsf.exe'" /f
    3⤵
    - Creates scheduled task(s)
    PID:1276
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Local\Temp\39f1303c19a90e8eb92a0569de617627.exe" "C:\Users\Admin\AppData\Roaming\tdsf\tdsf.exe"
  2⤵
  PID:3460

C:\Users\Admin\AppData\Roaming\tdsf\tdsf.exe
C:\Users\Admin\AppData\Roaming\tdsf\tdsf.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:892
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  PID:2028
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /sc minute /mo 1 /tn "Nano" /tr "'C:\Users\Admin\AppData\Roaming\tdsf\tdsf.exe'" /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1512
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nano" /tr "'C:\Users\Admin\AppData\Roaming\tdsf\tdsf.exe'" /f
    3⤵
    - Creates scheduled task(s)
    PID:1852
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Roaming\tdsf\tdsf.exe" "C:\Users\Admin\AppData\Roaming\tdsf\tdsf.exe"
  2⤵
  PID:2292

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Scripting

T1064

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Scripting

T1064

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/892-135-0x0000000005290000-0x0000000005291000-memory.dmp

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memory/892-129-0x0000000000EE0000-0x0000000000EE1000-memory.dmp

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memory/2732-120-0x0000000004B10000-0x0000000004B11000-memory.dmp

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memory/2732-121-0x0000000004F20000-0x0000000004F21000-memory.dmp

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memory/2732-115-0x0000000000150000-0x0000000000151000-memory.dmp

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memory/2732-119-0x0000000004AA0000-0x0000000004AA1000-memory.dmp

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memory/2732-118-0x0000000004BC0000-0x0000000004BC1000-memory.dmp

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memory/2732-117-0x0000000005020000-0x0000000005021000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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