7c67f745b24145c055e9423ec63cd3a488eb99d960cf49b85b57d08d71b5ed0b

Analysis

max time kernel
145s
max time network
149s
platform
windows10_x64
resource
win10v20201028
submitted
14/02/2021, 19:36

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General

Target
0acb60781639f9796bd6763591e1eac9.exe
Size 823KB
Sample210214-qagghdm8zn
SHA256 7c67f745b24145c055e9423ec63cd3a488eb99d960cf49b85b57d08d71b5ed0b
MD5 0acb60781639f9796bd6763591e1eac9
SHA1 972a2e0efdc2abfca7b845e7e16fab64cc0faf65
SHA512 a5e7b4a23c4a0d9267656fde8188d1288d0c38cacb0be82c820cc4328528f612bed241f9ea55f33b71cb8604c8ea8ca9c3d5494102873ac94826135a2b8e7a1b
MD5 SHA1 SHA512

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2264	btc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\WindowsUpdater = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\btc.exe\" .."	btc.exe

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

System Information Discovery
T1082

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3920 set thread context of 3536	3920	0acb60781639f9796bd6763591e1eac9.exe	80

Creates scheduled task(s) 1 TTPs 1 IoCs

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

persistence

Scheduled Task

T1053

pid	Process
3896	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3536	RegSvcs.exe
3536	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3536	RegSvcs.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 3920 wrote to memory of 3896	3920	0acb60781639f9796bd6763591e1eac9.exe	78
PID 3920 wrote to memory of 3896	3920	0acb60781639f9796bd6763591e1eac9.exe	78
PID 3920 wrote to memory of 3896	3920	0acb60781639f9796bd6763591e1eac9.exe	78
PID 3920 wrote to memory of 3536	3920	0acb60781639f9796bd6763591e1eac9.exe	80
PID 3920 wrote to memory of 3536	3920	0acb60781639f9796bd6763591e1eac9.exe	80
PID 3920 wrote to memory of 3536	3920	0acb60781639f9796bd6763591e1eac9.exe	80
PID 3920 wrote to memory of 3536	3920	0acb60781639f9796bd6763591e1eac9.exe	80
PID 3920 wrote to memory of 3536	3920	0acb60781639f9796bd6763591e1eac9.exe	80
PID 3920 wrote to memory of 3536	3920	0acb60781639f9796bd6763591e1eac9.exe	80
PID 3920 wrote to memory of 3536	3920	0acb60781639f9796bd6763591e1eac9.exe	80
PID 3920 wrote to memory of 3536	3920	0acb60781639f9796bd6763591e1eac9.exe	80
PID 3536 wrote to memory of 2264	3536	RegSvcs.exe	82
PID 3536 wrote to memory of 2264	3536	RegSvcs.exe	82

C:\Users\Admin\AppData\Local\Temp\0acb60781639f9796bd6763591e1eac9.exe
"C:\Users\Admin\AppData\Local\Temp\0acb60781639f9796bd6763591e1eac9.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3920
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ttkNqej" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8D5C.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:3896
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3536
- - C:\Users\Admin\AppData\Local\Temp\btc.exe
    "C:\Users\Admin\AppData\Local\Temp\btc.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    PID:2264

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2264-31-0x0000027773F70000-0x0000027773F72000-memory.dmp

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memory/2264-29-0x0000027758D90000-0x0000027758D91000-memory.dmp

Download

memory/2264-28-0x00007FF8E8D40000-0x00007FF8E972C000-memory.dmp

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memory/3536-15-0x0000000000400000-0x000000000043C000-memory.dmp

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memory/3536-17-0x0000000073BA0000-0x000000007428E000-memory.dmp

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memory/3536-24-0x00000000063D0000-0x00000000063D1000-memory.dmp

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memory/3536-23-0x0000000005C40000-0x0000000005C41000-memory.dmp

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memory/3536-22-0x0000000005930000-0x0000000005931000-memory.dmp

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memory/3920-2-0x0000000073BA0000-0x000000007428E000-memory.dmp

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memory/3920-11-0x0000000004E10000-0x0000000004E14000-memory.dmp

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memory/3920-10-0x0000000005090000-0x0000000005091000-memory.dmp

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memory/3920-12-0x0000000000A90000-0x0000000000AF4000-memory.dmp

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memory/3920-9-0x0000000004D60000-0x0000000004D61000-memory.dmp

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memory/3920-8-0x0000000004DF0000-0x0000000004DF1000-memory.dmp

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memory/3920-7-0x0000000004EC0000-0x0000000004EC1000-memory.dmp

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memory/3920-6-0x00000000053C0000-0x00000000053C1000-memory.dmp

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memory/3920-5-0x0000000004E20000-0x0000000004E21000-memory.dmp

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memory/3920-3-0x0000000000480000-0x0000000000481000-memory.dmp

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