babuk | 028facff67136de55fe200177a190da625c8e1713b4e7d95bf5fc5412a5afffc

General

Target

e_win.bin.exe
Size

79KB
MD5

eb9e0b14e2235af24eeee881892fc825
SHA1

3fb00aa10ccfaedfd29f8b01ef6ef4434d260eb9
SHA256

028facff67136de55fe200177a190da625c8e1713b4e7d95bf5fc5412a5afffc
SHA512

c341517ba090bf530bd1324758644c8d6d2e488912bae19e0b066d508f3e37845ca8b39e5ee86fe75b22126d5d4bcb4957f58e02360c2606f9c0278382238c0a

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 13 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\EditImport.raw.babyk	e_win.bin.exe
File renamed	C:\Users\Admin\Pictures\ExpandConnect.tif => C:\Users\Admin\Pictures\ExpandConnect.tif.babyk	e_win.bin.exe
File renamed	C:\Users\Admin\Pictures\ReceiveSuspend.tiff => C:\Users\Admin\Pictures\ReceiveSuspend.tiff.babyk	e_win.bin.exe
File opened for modification	C:\Users\Admin\Pictures\ReceiveSuspend.tiff.babyk	e_win.bin.exe
File renamed	C:\Users\Admin\Pictures\ResolveConvertTo.crw => C:\Users\Admin\Pictures\ResolveConvertTo.crw.babyk	e_win.bin.exe
File opened for modification	C:\Users\Admin\Pictures\ResolveConvertTo.crw.babyk	e_win.bin.exe
File renamed	C:\Users\Admin\Pictures\TestReceive.tif => C:\Users\Admin\Pictures\TestReceive.tif.babyk	e_win.bin.exe
File renamed	C:\Users\Admin\Pictures\UndoShow.tif => C:\Users\Admin\Pictures\UndoShow.tif.babyk	e_win.bin.exe
File opened for modification	C:\Users\Admin\Pictures\UndoShow.tif.babyk	e_win.bin.exe
File renamed	C:\Users\Admin\Pictures\EditImport.raw => C:\Users\Admin\Pictures\EditImport.raw.babyk	e_win.bin.exe
File opened for modification	C:\Users\Admin\Pictures\ExpandConnect.tif.babyk	e_win.bin.exe
File opened for modification	C:\Users\Admin\Pictures\ReceiveSuspend.tiff	e_win.bin.exe
File opened for modification	C:\Users\Admin\Pictures\TestReceive.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)	\??\E:	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)	\??\J:	e_win.bin.exe
File opened (read-only)	\??\L:	e_win.bin.exe
File opened (read-only)	\??\V:	e_win.bin.exe
File opened (read-only)	\??\W:	e_win.bin.exe
File opened (read-only)	\??\R:	e_win.bin.exe
File opened (read-only)	\??\H:	e_win.bin.exe
File opened (read-only)	\??\K:	e_win.bin.exe
File opened (read-only)	\??\X:	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)	\??\G:	e_win.bin.exe
File opened (read-only)	\??\Q:	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)	\??\U:	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)	\??\F:	e_win.bin.exe
File opened (read-only)	\??\Z:	e_win.bin.exe
File opened (read-only)	\??\P:	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
4072	vssadmin.exe
3084	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

e_win.bin.exe

pid	Process
4092	e_win.bin.exe
4092	e_win.bin.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description	pid	Process
Token: SeBackupPrivilege	3276	vssvc.exe
Token: SeRestorePrivilege	3276	vssvc.exe
Token: SeAuditPrivilege	3276	vssvc.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

e_win.bin.execmd.execmd.exe

description	pid	Process	procid_target
PID 4092 wrote to memory of 1756	4092	e_win.bin.exe	74
PID 4092 wrote to memory of 1756	4092	e_win.bin.exe	74
PID 1756 wrote to memory of 4072	1756	cmd.exe	78
PID 1756 wrote to memory of 4072	1756	cmd.exe	78
PID 4092 wrote to memory of 3144	4092	e_win.bin.exe	82
PID 4092 wrote to memory of 3144	4092	e_win.bin.exe	82
PID 3144 wrote to memory of 3084	3144	cmd.exe	84
PID 3144 wrote to memory of 3084	3144	cmd.exe	84

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:4092
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1756
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:4072
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3144
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:3084

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3276

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\How To Restore Your Files.txt
1⤵
PID:3684

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

C:\Users\Admin\Desktop\How To Restore Your Files.txt

MD5
1cb251ec0d568de6a929b520c4aed8d1

SHA1
372ea08cab33e71c02c651dbc83a474d32c676ea

SHA256
982d9e3eb996f559e633f4d194def3761d909f5a3b647d1a851fead67c32c9d1

SHA512
eaf2c12742cb8c161bcbd84b032b9bb98999a23282542672ca01cc6edd268f7dce9987ad6b2bc79305634f89d90b90102bcd59a57e7135b8e3ceb93c0597117b

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memory/1756-114-0x0000000000000000-mapping.dmp

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memory/3084-118-0x0000000000000000-mapping.dmp

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memory/3144-117-0x0000000000000000-mapping.dmp

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memory/4072-115-0x0000000000000000-mapping.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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