babuk | cb7cd5de34353ff74b8e1f829cffc8d9532b2652fe2d832fa5e57c30c5bde2a8

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 8 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\SplitInstall.crw.babyk	e_win.bin.exe
File renamed	C:\Users\Admin\Pictures\ConvertFromExport.raw => C:\Users\Admin\Pictures\ConvertFromExport.raw.babyk	e_win.bin.exe
File opened for modification	C:\Users\Admin\Pictures\ConvertFromExport.raw.babyk	e_win.bin.exe
File renamed	C:\Users\Admin\Pictures\FormatHide.raw => C:\Users\Admin\Pictures\FormatHide.raw.babyk	e_win.bin.exe
File opened for modification	C:\Users\Admin\Pictures\FormatHide.raw.babyk	e_win.bin.exe
File renamed	C:\Users\Admin\Pictures\MergeShow.tif => C:\Users\Admin\Pictures\MergeShow.tif.babyk	e_win.bin.exe
File opened for modification	C:\Users\Admin\Pictures\MergeShow.tif.babyk	e_win.bin.exe
File renamed	C:\Users\Admin\Pictures\SplitInstall.crw => C:\Users\Admin\Pictures\SplitInstall.crw.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)	\??\G:	e_win.bin.exe
File opened (read-only)	\??\K:	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)	\??\T:	e_win.bin.exe
File opened (read-only)	\??\Y:	e_win.bin.exe
File opened (read-only)	\??\A:	e_win.bin.exe
File opened (read-only)	\??\S:	e_win.bin.exe
File opened (read-only)	\??\Z:	e_win.bin.exe
File opened (read-only)	\??\V:	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)	\??\L:	e_win.bin.exe
File opened (read-only)	\??\N:	e_win.bin.exe
File opened (read-only)	\??\M:	e_win.bin.exe
File opened (read-only)	\??\X:	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)	\??\P:	e_win.bin.exe
File opened (read-only)	\??\F:	e_win.bin.exe
File opened (read-only)	\??\H:	e_win.bin.exe
File opened (read-only)	\??\J:	e_win.bin.exe
File opened (read-only)	\??\I:	e_win.bin.exe
File opened (read-only)	\??\B:	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

1372 vssadmin.exe
1392 vssadmin.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

e_win.bin.exe

pid process

1724 e_win.bin.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 1480 vssvc.exe
Token: SeRestorePrivilege 1480 vssvc.exe
Token: SeAuditPrivilege 1480 vssvc.exe

pid	process
1372	vssadmin.exe
1392	vssadmin.exe

pid	process
1724	e_win.bin.exe

description	pid	process
Token: SeBackupPrivilege	1480	vssvc.exe
Token: SeRestorePrivilege	1480	vssvc.exe
Token: SeAuditPrivilege	1480	vssvc.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

e_win.bin.execmd.execmd.exe

description	pid	process	target process
PID 1724 wrote to memory of 1300	1724	e_win.bin.exe	cmd.exe
PID 1724 wrote to memory of 1300	1724	e_win.bin.exe	cmd.exe
PID 1724 wrote to memory of 1300	1724	e_win.bin.exe	cmd.exe
PID 1724 wrote to memory of 1300	1724	e_win.bin.exe	cmd.exe
PID 1300 wrote to memory of 1372	1300	cmd.exe	vssadmin.exe
PID 1300 wrote to memory of 1372	1300	cmd.exe	vssadmin.exe
PID 1300 wrote to memory of 1372	1300	cmd.exe	vssadmin.exe
PID 1724 wrote to memory of 620	1724	e_win.bin.exe	cmd.exe
PID 1724 wrote to memory of 620	1724	e_win.bin.exe	cmd.exe
PID 1724 wrote to memory of 620	1724	e_win.bin.exe	cmd.exe
PID 1724 wrote to memory of 620	1724	e_win.bin.exe	cmd.exe
PID 620 wrote to memory of 1392	620	cmd.exe	vssadmin.exe
PID 620 wrote to memory of 1392	620	cmd.exe	vssadmin.exe
PID 620 wrote to memory of 1392	620	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:1724
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1300
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:1372
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:620
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:1392

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1480

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/620-63-0x0000000000000000-mapping.dmp

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memory/1300-61-0x0000000000000000-mapping.dmp

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memory/1372-62-0x0000000000000000-mapping.dmp

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memory/1392-64-0x0000000000000000-mapping.dmp

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memory/1724-60-0x0000000075161000-0x0000000075163000-memory.dmp

Filesize
8KB

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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