b575cbe291920b98cd523890c53902ccaad1c1f0357024c51e0ac5b1d0cd3786

General

Target
captcha_visual_.bin.exe
Size 42KB
Sample201207-c121lcbfps
SHA256 b575cbe291920b98cd523890c53902ccaad1c1f0357024c51e0ac5b1d0cd3786
MD5 b2b278aed753209592b051998cc78d6e
SHA1 187fade13fa2590af0a7168a5fa1bbdd38fb696f
SHA512 a21486edf9da1e1b99135ce61f120e00dee2915d99b345c0925cf4a8df308da3344e2dc932d6b2fea6e570ddef9ea49527b1981f1ef95896a56e731be4516164
MD5 SHA1 SHA512

Score

9^/10

ransomware

Malware Config

Signatures

Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Deletes backup catalog 3 TTPs 1 IoCs

Uses wbadmin.exe to inhibit system recovery.

ransomware

Command-Line Interface

T1059

File Deletion

T1107

Inhibit System Recovery

T1490

pid	Process
960	wbadmin.exe

Interacts with shadow copies 2 TTPs 1 IoCs

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

ransomware

File Deletion

T1107

Inhibit System Recovery

T1490

pid	Process
828	vssadmin.exe

Suspicious use of AdjustPrivilegeToken 26 IoCs

description	pid	Process
Token: SeBackupPrivilege	1300	vssvc.exe
Token: SeRestorePrivilege	1300	vssvc.exe
Token: SeAuditPrivilege	1300	vssvc.exe
Token: SeBackupPrivilege	1764	wbengine.exe
Token: SeRestorePrivilege	1764	wbengine.exe
Token: SeSecurityPrivilege	1764	wbengine.exe
Token: SeIncreaseQuotaPrivilege	1852	WMIC.exe
Token: SeSecurityPrivilege	1852	WMIC.exe
Token: SeTakeOwnershipPrivilege	1852	WMIC.exe
Token: SeLoadDriverPrivilege	1852	WMIC.exe
Token: SeSystemProfilePrivilege	1852	WMIC.exe
Token: SeSystemtimePrivilege	1852	WMIC.exe
Token: SeProfSingleProcessPrivilege	1852	WMIC.exe
Token: SeIncBasePriorityPrivilege	1852	WMIC.exe
Token: SeCreatePagefilePrivilege	1852	WMIC.exe
Token: SeBackupPrivilege	1852	WMIC.exe
Token: SeRestorePrivilege	1852	WMIC.exe
Token: SeShutdownPrivilege	1852	WMIC.exe
Token: SeDebugPrivilege	1852	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1852	WMIC.exe
Token: SeRemoteShutdownPrivilege	1852	WMIC.exe
Token: SeUndockPrivilege	1852	WMIC.exe
Token: SeManageVolumePrivilege	1852	WMIC.exe
Token: 33	1852	WMIC.exe
Token: 34	1852	WMIC.exe
Token: 35	1852	WMIC.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1824 wrote to memory of 1780	1824	captcha_visual_.bin.exe	29
PID 1824 wrote to memory of 1780	1824	captcha_visual_.bin.exe	29
PID 1824 wrote to memory of 1780	1824	captcha_visual_.bin.exe	29
PID 1824 wrote to memory of 1780	1824	captcha_visual_.bin.exe	29
PID 1780 wrote to memory of 828	1780	cmd.exe	31
PID 1780 wrote to memory of 828	1780	cmd.exe	31
PID 1780 wrote to memory of 828	1780	cmd.exe	31
PID 1780 wrote to memory of 960	1780	cmd.exe	34
PID 1780 wrote to memory of 960	1780	cmd.exe	34
PID 1780 wrote to memory of 960	1780	cmd.exe	34
PID 1780 wrote to memory of 1852	1780	cmd.exe	38
PID 1780 wrote to memory of 1852	1780	cmd.exe	38
PID 1780 wrote to memory of 1852	1780	cmd.exe	38

C:\Users\Admin\AppData\Local\Temp\captcha_visual_.bin.exe
"C:\Users\Admin\AppData\Local\Temp\captcha_visual_.bin.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1824
- C:\Windows\system32\cmd.exe
  "C:\Windows\system32\cmd.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1780
- - C:\Windows\system32\vssadmin.exe
    vssadmin delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:828
- - C:\Windows\system32\wbadmin.exe
    wbadmin delete catalog -quiet
    3⤵
    - Deletes backup catalog
    PID:960
- - C:\Windows\System32\Wbem\WMIC.exe
    wmic shadowcopy delete
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:1852

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1300

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1764

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:1712

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
PID:1608

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Command-Line Interface

1

T1059

Persistence

Privilege Escalation

Defense Evasion

File Deletion

3

T1107

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

3

T1490

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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