babuk | 7f70c9a586b7ee09f1bff4f642381d5ed72af47381da2f535363776fd30d024b

General

Target

e_win.bin.exe
Size

79KB
MD5

6ce7f33dc923d162788aa3236483701c
SHA1

97395d6f9474638c0d97596a0613aaea04daa547
SHA256

e2dc8fb92ff49643931fe736d002d42f2fb86ba5642ebf44ecbec674a77d8227
SHA512

0d5ac1d3e3e1ee34c94af6288f82ae663f32fb1383aa6b85f16a6691a139743e16f5a25cfcabbc8428d564cb297d90a381a2863c162a01876779c017ae2141df

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 9 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

e_win.bin.exe

description	ioc	process
File opened for modification	C:\Users\Admin\Pictures\LimitUnregister.png.babyk	e_win.bin.exe
File opened for modification	C:\Users\Admin\Pictures\TraceMove.tiff	e_win.bin.exe
File opened for modification	C:\Users\Admin\Pictures\PingGet.tif.babyk	e_win.bin.exe
File renamed	C:\Users\Admin\Pictures\StartSend.png => C:\Users\Admin\Pictures\StartSend.png.babyk	e_win.bin.exe
File opened for modification	C:\Users\Admin\Pictures\StartSend.png.babyk	e_win.bin.exe
File renamed	C:\Users\Admin\Pictures\TraceMove.tiff => C:\Users\Admin\Pictures\TraceMove.tiff.babyk	e_win.bin.exe
File opened for modification	C:\Users\Admin\Pictures\TraceMove.tiff.babyk	e_win.bin.exe
File renamed	C:\Users\Admin\Pictures\LimitUnregister.png => C:\Users\Admin\Pictures\LimitUnregister.png.babyk	e_win.bin.exe
File renamed	C:\Users\Admin\Pictures\PingGet.tif => C:\Users\Admin\Pictures\PingGet.tif.babyk	e_win.bin.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:

e_win.bin.exe

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

2008 vssadmin.exe
1328 vssadmin.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

e_win.bin.exe

pid process

1348 e_win.bin.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 576 vssvc.exe
Token: SeRestorePrivilege 576 vssvc.exe
Token: SeAuditPrivilege 576 vssvc.exe

pid	process
2008	vssadmin.exe
1328	vssadmin.exe

pid	process
1348	e_win.bin.exe

description	pid	process
Token: SeBackupPrivilege	576	vssvc.exe
Token: SeRestorePrivilege	576	vssvc.exe
Token: SeAuditPrivilege	576	vssvc.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

e_win.bin.execmd.execmd.exe

description	pid	process	target process
PID 1348 wrote to memory of 1280	1348	e_win.bin.exe	cmd.exe
PID 1348 wrote to memory of 1280	1348	e_win.bin.exe	cmd.exe
PID 1348 wrote to memory of 1280	1348	e_win.bin.exe	cmd.exe
PID 1348 wrote to memory of 1280	1348	e_win.bin.exe	cmd.exe
PID 1280 wrote to memory of 2008	1280	cmd.exe	vssadmin.exe
PID 1280 wrote to memory of 2008	1280	cmd.exe	vssadmin.exe
PID 1280 wrote to memory of 2008	1280	cmd.exe	vssadmin.exe
PID 1348 wrote to memory of 1672	1348	e_win.bin.exe	cmd.exe
PID 1348 wrote to memory of 1672	1348	e_win.bin.exe	cmd.exe
PID 1348 wrote to memory of 1672	1348	e_win.bin.exe	cmd.exe
PID 1348 wrote to memory of 1672	1348	e_win.bin.exe	cmd.exe
PID 1672 wrote to memory of 1328	1672	cmd.exe	vssadmin.exe
PID 1672 wrote to memory of 1328	1672	cmd.exe	vssadmin.exe
PID 1672 wrote to memory of 1328	1672	cmd.exe	vssadmin.exe

C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe
"C:\Users\Admin\AppData\Local\Temp\e_win.bin.exe"
1⤵
- Modifies extensions of user files
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1348
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1280
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:2008
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1672
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:1328

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:576

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File Deletion

2

T1107

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

2

T1490

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Downloads

memory/1280-61-0x0000000000000000-mapping.dmp

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memory/1328-64-0x0000000000000000-mapping.dmp

Download
memory/1348-60-0x00000000762C1000-0x00000000762C3000-memory.dmp

Filesize
8KB

Download
memory/1672-63-0x0000000000000000-mapping.dmp

Download
memory/2008-62-0x0000000000000000-mapping.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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