cryptolocker | 5e902a138174c34e5445685c82b2044e0b35565854471aaccef0315c77288dc9

Analysis

max time kernel
51s
max time network
51s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
21-06-2024 02:24

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General

Target

5e902a138174c34e5445685c82b2044e0b35565854471aaccef0315c77288dc9.exe
Size

208KB
MD5

12bc78e07cb69dd6ec32729240dbe537
SHA1

7b7d9b115ec10074f7166ec3379fead6e816da59
SHA256

5e902a138174c34e5445685c82b2044e0b35565854471aaccef0315c77288dc9
SHA512

c974592671b081d0af48c1aab9f9f02243773a081d9fadf70e3caa7454dca657b45bece27852397e74f601df1abdf5db496c821a5df624057355fd15c807e15a
SSDEEP

3072:GXbUMNAwQ2Jpo/AkQCUyevi8xRpz81NADJ2:ibUMKwQ2J4ReviSjeKN

Score

10^/10

cryptolocker defense_evasion execution impact ransomware

Malware Config

Signatures

CryptoLocker
Ransomware family with multiple variants.
ransomware cryptolocker
Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware defense_evasion impact execution

File Deletion
T1070.004

Inhibit System Recovery
T1490

Windows Management Instrumentation
T1047

Detects command variations typically used by ransomware 1 IoCs

resource	yara_rule
behavioral2/memory/3404-1-0x0000000000630000-0x000000000066A000-memory.dmp	INDICATOR_SUSPICIOUS_GENRansomware

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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	5e902a138174c34e5445685c82b2044e0b35565854471aaccef0315c77288dc9.exe

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

System Information Discovery
T1082

Interacts with shadow copies 3 TTPs 1 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1070.004

Inhibit System Recovery

T1490

Direct Volume Access

T1006

pid	Process
760	vssadmin.exe

Suspicious use of AdjustPrivilegeToken 21 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1616	WMIC.exe
Token: SeSecurityPrivilege	1616	WMIC.exe
Token: SeTakeOwnershipPrivilege	1616	WMIC.exe
Token: SeLoadDriverPrivilege	1616	WMIC.exe
Token: SeSystemProfilePrivilege	1616	WMIC.exe
Token: SeSystemtimePrivilege	1616	WMIC.exe
Token: SeProfSingleProcessPrivilege	1616	WMIC.exe
Token: SeIncBasePriorityPrivilege	1616	WMIC.exe
Token: SeCreatePagefilePrivilege	1616	WMIC.exe
Token: SeBackupPrivilege	1616	WMIC.exe
Token: SeRestorePrivilege	1616	WMIC.exe
Token: SeShutdownPrivilege	1616	WMIC.exe
Token: SeDebugPrivilege	1616	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1616	WMIC.exe
Token: SeRemoteShutdownPrivilege	1616	WMIC.exe
Token: SeUndockPrivilege	1616	WMIC.exe
Token: SeManageVolumePrivilege	1616	WMIC.exe
Token: 33	1616	WMIC.exe
Token: 34	1616	WMIC.exe
Token: 35	1616	WMIC.exe
Token: 36	1616	WMIC.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3404 wrote to memory of 1320	3404	5e902a138174c34e5445685c82b2044e0b35565854471aaccef0315c77288dc9.exe	80
PID 3404 wrote to memory of 1320	3404	5e902a138174c34e5445685c82b2044e0b35565854471aaccef0315c77288dc9.exe	80
PID 3404 wrote to memory of 2100	3404	5e902a138174c34e5445685c82b2044e0b35565854471aaccef0315c77288dc9.exe	82
PID 3404 wrote to memory of 2100	3404	5e902a138174c34e5445685c82b2044e0b35565854471aaccef0315c77288dc9.exe	82
PID 1320 wrote to memory of 1616	1320	cmd.exe	84
PID 1320 wrote to memory of 1616	1320	cmd.exe	84
PID 2100 wrote to memory of 760	2100	cmd.exe	85
PID 2100 wrote to memory of 760	2100	cmd.exe	85

C:\Users\Admin\AppData\Local\Temp\5e902a138174c34e5445685c82b2044e0b35565854471aaccef0315c77288dc9.exe
"C:\Users\Admin\AppData\Local\Temp\5e902a138174c34e5445685c82b2044e0b35565854471aaccef0315c77288dc9.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3404
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C wmic.exe SHADOWCOPY /nointeractive
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1320
- - C:\Windows\System32\Wbem\WMIC.exe
    wmic.exe SHADOWCOPY /nointeractive
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:1616
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C vssadmin.exe Delete Shadows /All/ Quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2100
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe Delete Shadows /All/ Quiet
    3⤵
    - Interacts with shadow copies
    PID:760

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Windows Management Instrumentation

T1047

Persistence

Privilege Escalation

Defense Evasion

Direct Volume Access

T1006

Indicator Removal

T1070

File Deletion

T1070.004

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact