babuk | a3788d8cf37d691627bdbc5add07b598fdde66bdfcdb05299b0976715b392a61

Analysis

max time kernel
115s
max time network
137s
platform
windows10_x64
resource
win10-en-20211208
submitted
15-12-2021 06:21

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General

Target

03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe
Size

79KB
MD5

1dbd0abfdd692d5939f2aa201674d870
SHA1

5a8d3472a642eb62cfde5e4db469c62422b16792
SHA256

03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7
SHA512

ad1398d865cda6c009cfab67901fcb7f2928a5b7dfd8cdc0a892bb6f1ec62f8d492f1f3a59277afac2251ebe2069a243b66d57754629290bbf68791f586c7311

Score

10^/10

babuk ransomware

Malware Config

Signatures

Babuk Locker
RaaS first seen in 2021 initially called Vasa Locker.
ransomware babuk
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Modifies extensions of user files 6 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe

description	ioc	process
File renamed	C:\Users\Admin\Pictures\FindInvoke.crw => C:\Users\Admin\Pictures\FindInvoke.crw.babyk	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe
File opened for modification	C:\Users\Admin\Pictures\FindInvoke.crw.babyk	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe
File renamed	C:\Users\Admin\Pictures\FindUpdate.png => C:\Users\Admin\Pictures\FindUpdate.png.babyk	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe
File opened for modification	C:\Users\Admin\Pictures\FindUpdate.png.babyk	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe
File renamed	C:\Users\Admin\Pictures\MergeRequest.raw => C:\Users\Admin\Pictures\MergeRequest.raw.babyk	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe
File opened for modification	C:\Users\Admin\Pictures\MergeRequest.raw.babyk	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe

Enumerates connected drives 3 TTPs 24 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe

description	ioc	process
File opened (read-only)	\??\J:	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe
File opened (read-only)	\??\Z:	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe
File opened (read-only)	\??\X:	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe
File opened (read-only)	\??\M:	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe
File opened (read-only)	\??\W:	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe
File opened (read-only)	\??\I:	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe
File opened (read-only)	\??\O:	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe
File opened (read-only)	\??\P:	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe
File opened (read-only)	\??\L:	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe
File opened (read-only)	\??\B:	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe
File opened (read-only)	\??\N:	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe
File opened (read-only)	\??\Q:	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe
File opened (read-only)	\??\E:	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe
File opened (read-only)	\??\R:	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe
File opened (read-only)	\??\U:	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe
File opened (read-only)	\??\H:	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe
File opened (read-only)	\??\K:	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe
File opened (read-only)	\??\V:	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe
File opened (read-only)	\??\Y:	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe
File opened (read-only)	\??\S:	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe
File opened (read-only)	\??\F:	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe
File opened (read-only)	\??\G:	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe
File opened (read-only)	\??\T:	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe
File opened (read-only)	\??\A:	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe

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

System Information Discovery
T1082
Interacts with shadow copies 2 TTPs 2 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Processes:

vssadmin.exevssadmin.exe

pid process

1160 vssadmin.exe
1060 vssadmin.exe

pid	process
1160	vssadmin.exe
1060	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe

pid	process
3692	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe
3692	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 1424 vssvc.exe
Token: SeRestorePrivilege 1424 vssvc.exe
Token: SeAuditPrivilege 1424 vssvc.exe

description	pid	process
Token: SeBackupPrivilege	1424	vssvc.exe
Token: SeRestorePrivilege	1424	vssvc.exe
Token: SeAuditPrivilege	1424	vssvc.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.execmd.execmd.exe

description	pid	process	target process
PID 3692 wrote to memory of 1328	3692	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe	cmd.exe
PID 3692 wrote to memory of 1328	3692	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe	cmd.exe
PID 1328 wrote to memory of 1160	1328	cmd.exe	vssadmin.exe
PID 1328 wrote to memory of 1160	1328	cmd.exe	vssadmin.exe
PID 3692 wrote to memory of 500	3692	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe	cmd.exe
PID 3692 wrote to memory of 500	3692	03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe	cmd.exe
PID 500 wrote to memory of 1060	500	cmd.exe	vssadmin.exe
PID 500 wrote to memory of 1060	500	cmd.exe	vssadmin.exe

C:\Users\Admin\AppData\Local\Temp\03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe
"C:\Users\Admin\AppData\Local\Temp\03110baa5aad9d01610293f2b8cd21b44cc7efa0a465e677d6b3f92510a4b1d7.exe"
1⤵
- Modifies extensions of user files
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3692
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1328
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:1160
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:500
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:1060

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1424

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File Deletion

T1107

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

memory/500-120-0x0000000000000000-mapping.dmp

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memory/1060-121-0x0000000000000000-mapping.dmp

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memory/1160-119-0x0000000000000000-mapping.dmp

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memory/1328-118-0x0000000000000000-mapping.dmp

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