a587644256ddbb3fca7decfdeac9c8707867417a5acde17c79ad838f143224d9

Analysis

max time kernel
124s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
29/11/2022, 03:57

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General

Target

a587644256ddbb3fca7decfdeac9c8707867417a5acde17c79ad838f143224d9.exe
Size

1.2MB
MD5

3b8aed4a1da82c7b98501c42b5ec4dfb
SHA1

6ac7b359d8bc65123a20a10ed77c7aade9e017e4
SHA256

a587644256ddbb3fca7decfdeac9c8707867417a5acde17c79ad838f143224d9
SHA512

be5460051a9810aa7161886fde3f48b47110a9278db186d50bde03cc1e70de306b93e4cd2372fcb376588795bb385965b3e8db7156838aaae86429747693e432
SSDEEP

3072:iyf8n+BnNpiXN5U+M/hQuaCA3VMxDJAQO7LN:i/+BnNpCqP/hQuavirOH

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 4 IoCs

pid	Process
4312	winlogon.exe
1872	winlogon.exe
4488	winlogon.exe
2384	winlogon.exe

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/2548-134-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/2548-136-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/2548-137-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/2548-143-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/1872-150-0x0000000000400000-0x000000000041C000-memory.dmp	upx
behavioral2/memory/1872-154-0x0000000000400000-0x000000000041C000-memory.dmp	upx

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	a587644256ddbb3fca7decfdeac9c8707867417a5acde17c79ad838f143224d9.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2224 set thread context of 2548	2224	a587644256ddbb3fca7decfdeac9c8707867417a5acde17c79ad838f143224d9.exe	81
PID 4312 set thread context of 1872	4312	winlogon.exe	84
PID 1872 set thread context of 4488	1872	winlogon.exe	86
PID 1872 set thread context of 2384	1872	winlogon.exe	97

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

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4316	4488	WerFault.exe	86
3992	2384	WerFault.exe	97

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2548	a587644256ddbb3fca7decfdeac9c8707867417a5acde17c79ad838f143224d9.exe
1872	winlogon.exe

Suspicious use of WriteProcessMemory 41 IoCs

description	pid	Process	procid_target
PID 2224 wrote to memory of 1156	2224	a587644256ddbb3fca7decfdeac9c8707867417a5acde17c79ad838f143224d9.exe	80
PID 2224 wrote to memory of 1156	2224	a587644256ddbb3fca7decfdeac9c8707867417a5acde17c79ad838f143224d9.exe	80
PID 2224 wrote to memory of 1156	2224	a587644256ddbb3fca7decfdeac9c8707867417a5acde17c79ad838f143224d9.exe	80
PID 2224 wrote to memory of 2548	2224	a587644256ddbb3fca7decfdeac9c8707867417a5acde17c79ad838f143224d9.exe	81
PID 2224 wrote to memory of 2548	2224	a587644256ddbb3fca7decfdeac9c8707867417a5acde17c79ad838f143224d9.exe	81
PID 2224 wrote to memory of 2548	2224	a587644256ddbb3fca7decfdeac9c8707867417a5acde17c79ad838f143224d9.exe	81
PID 2224 wrote to memory of 2548	2224	a587644256ddbb3fca7decfdeac9c8707867417a5acde17c79ad838f143224d9.exe	81
PID 2224 wrote to memory of 2548	2224	a587644256ddbb3fca7decfdeac9c8707867417a5acde17c79ad838f143224d9.exe	81
PID 2224 wrote to memory of 2548	2224	a587644256ddbb3fca7decfdeac9c8707867417a5acde17c79ad838f143224d9.exe	81
PID 2224 wrote to memory of 2548	2224	a587644256ddbb3fca7decfdeac9c8707867417a5acde17c79ad838f143224d9.exe	81
PID 2224 wrote to memory of 2548	2224	a587644256ddbb3fca7decfdeac9c8707867417a5acde17c79ad838f143224d9.exe	81
PID 2548 wrote to memory of 4312	2548	a587644256ddbb3fca7decfdeac9c8707867417a5acde17c79ad838f143224d9.exe	83
PID 2548 wrote to memory of 4312	2548	a587644256ddbb3fca7decfdeac9c8707867417a5acde17c79ad838f143224d9.exe	83
PID 2548 wrote to memory of 4312	2548	a587644256ddbb3fca7decfdeac9c8707867417a5acde17c79ad838f143224d9.exe	83
PID 4312 wrote to memory of 2140	4312	winlogon.exe	85
PID 4312 wrote to memory of 2140	4312	winlogon.exe	85
PID 4312 wrote to memory of 2140	4312	winlogon.exe	85
PID 4312 wrote to memory of 1872	4312	winlogon.exe	84
PID 4312 wrote to memory of 1872	4312	winlogon.exe	84
PID 4312 wrote to memory of 1872	4312	winlogon.exe	84
PID 4312 wrote to memory of 1872	4312	winlogon.exe	84
PID 4312 wrote to memory of 1872	4312	winlogon.exe	84
PID 4312 wrote to memory of 1872	4312	winlogon.exe	84
PID 4312 wrote to memory of 1872	4312	winlogon.exe	84
PID 4312 wrote to memory of 1872	4312	winlogon.exe	84
PID 1872 wrote to memory of 4488	1872	winlogon.exe	86
PID 1872 wrote to memory of 4488	1872	winlogon.exe	86
PID 1872 wrote to memory of 4488	1872	winlogon.exe	86
PID 1872 wrote to memory of 4488	1872	winlogon.exe	86
PID 1872 wrote to memory of 4488	1872	winlogon.exe	86
PID 1872 wrote to memory of 4488	1872	winlogon.exe	86
PID 1872 wrote to memory of 4488	1872	winlogon.exe	86
PID 1872 wrote to memory of 4488	1872	winlogon.exe	86
PID 1872 wrote to memory of 2384	1872	winlogon.exe	97
PID 1872 wrote to memory of 2384	1872	winlogon.exe	97
PID 1872 wrote to memory of 2384	1872	winlogon.exe	97
PID 1872 wrote to memory of 2384	1872	winlogon.exe	97
PID 1872 wrote to memory of 2384	1872	winlogon.exe	97
PID 1872 wrote to memory of 2384	1872	winlogon.exe	97
PID 1872 wrote to memory of 2384	1872	winlogon.exe	97
PID 1872 wrote to memory of 2384	1872	winlogon.exe	97

C:\Users\Admin\AppData\Local\Temp\a587644256ddbb3fca7decfdeac9c8707867417a5acde17c79ad838f143224d9.exe
"C:\Users\Admin\AppData\Local\Temp\a587644256ddbb3fca7decfdeac9c8707867417a5acde17c79ad838f143224d9.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2224
- C:\Windows\SysWOW64\svchost.exe
  C:\Windows\system32\\svchost.exe
  2⤵
  PID:1156
- C:\Users\Admin\AppData\Local\Temp\a587644256ddbb3fca7decfdeac9c8707867417a5acde17c79ad838f143224d9.exe
  2⤵
  - Checks computer location settings
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2548
- - C:\Users\Admin\E696D64614\winlogon.exe
    "C:\Users\Admin\E696D64614\winlogon.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4312
  - - C:\Users\Admin\E696D64614\winlogon.exe
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:1872
    - - C:\Users\Admin\E696D64614\winlogon.exe
        
        "C:\Users\Admin\E696D64614\winlogon.exe"
        5⤵
        Executes dropped EXE
        
        PID:4488
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4488 -s 12
        6⤵
        Program crash
        
        PID:4316
    - - C:\Users\Admin\E696D64614\winlogon.exe
        
        "C:\Users\Admin\E696D64614\winlogon.exe"
        5⤵
        Executes dropped EXE
        
        PID:2384
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2384 -s 12
        6⤵
        Program crash
        
        PID:3992
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\system32\\svchost.exe
      4⤵
      PID:2140

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4488 -ip 4488
1⤵
PID:4064

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 2384 -ip 2384
1⤵
PID:3048

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\E696D64614\winlogon.exe

Filesize
1.2MB

MD5
3b8aed4a1da82c7b98501c42b5ec4dfb

SHA1
6ac7b359d8bc65123a20a10ed77c7aade9e017e4

SHA256
a587644256ddbb3fca7decfdeac9c8707867417a5acde17c79ad838f143224d9

SHA512
be5460051a9810aa7161886fde3f48b47110a9278db186d50bde03cc1e70de306b93e4cd2372fcb376588795bb385965b3e8db7156838aaae86429747693e432

Download Submit
C:\Users\Admin\E696D64614\winlogon.exe

Filesize
1.2MB

MD5
3b8aed4a1da82c7b98501c42b5ec4dfb

SHA1
6ac7b359d8bc65123a20a10ed77c7aade9e017e4

SHA256
a587644256ddbb3fca7decfdeac9c8707867417a5acde17c79ad838f143224d9

SHA512
be5460051a9810aa7161886fde3f48b47110a9278db186d50bde03cc1e70de306b93e4cd2372fcb376588795bb385965b3e8db7156838aaae86429747693e432

Download Submit
C:\Users\Admin\E696D64614\winlogon.exe

Filesize
1.2MB

MD5
3b8aed4a1da82c7b98501c42b5ec4dfb

SHA1
6ac7b359d8bc65123a20a10ed77c7aade9e017e4

SHA256
a587644256ddbb3fca7decfdeac9c8707867417a5acde17c79ad838f143224d9

SHA512
be5460051a9810aa7161886fde3f48b47110a9278db186d50bde03cc1e70de306b93e4cd2372fcb376588795bb385965b3e8db7156838aaae86429747693e432

Download Submit
C:\Users\Admin\E696D64614\winlogon.exe

Filesize
1.2MB

MD5
3b8aed4a1da82c7b98501c42b5ec4dfb

SHA1
6ac7b359d8bc65123a20a10ed77c7aade9e017e4

SHA256
a587644256ddbb3fca7decfdeac9c8707867417a5acde17c79ad838f143224d9

SHA512
be5460051a9810aa7161886fde3f48b47110a9278db186d50bde03cc1e70de306b93e4cd2372fcb376588795bb385965b3e8db7156838aaae86429747693e432

Download Submit
C:\Users\Admin\E696D64614\winlogon.exe

Filesize
1.2MB

MD5
3b8aed4a1da82c7b98501c42b5ec4dfb

SHA1
6ac7b359d8bc65123a20a10ed77c7aade9e017e4

SHA256
a587644256ddbb3fca7decfdeac9c8707867417a5acde17c79ad838f143224d9

SHA512
be5460051a9810aa7161886fde3f48b47110a9278db186d50bde03cc1e70de306b93e4cd2372fcb376588795bb385965b3e8db7156838aaae86429747693e432

Download Submit
memory/1872-150-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1872-154-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/2548-143-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/2548-137-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/2548-136-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/2548-134-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download