babuk | 3cc722073092656d090e5b3a51132741a368062ab2a4b6b70b4232abe0eea535

Analysis

max time kernel
36s
max time network
17s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260706-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260706-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
07/07/2026, 12:07

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General

Target
e_win.exe
Size 79KB
Sample260707-pabwfahs3x
SHA256 3cc722073092656d090e5b3a51132741a368062ab2a4b6b70b4232abe0eea535
MD5 49681242e8fe91eb0c234e98a57ed731
SHA1 b10085364aa6e111791e79e53e8abf594ec3a743
SHA512 5c7d1f7694fde0646a5c85ba54c5ce6ec0500b455d8db6cdfc0fc90ce7129a1736936b0fe7b68dba877efe35ef0bb3d91e984507087814a615841088ad94c419
SSDEEP 1536:s6UhZM4hubesrQLOJgY8ZZP8LHD4XWaNH71dLdG1iiFM2iG2zs4:uhZ5YesrQLOJgY8Zp8LHD4XWaNH71dLI
TLSH
T1FB83D8115945E2B6C5D132319167F1AAC13A197003B5B78B63C027AEFB10AE8F6BCF67
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

defense_evasion discovery execution babuk impact ransomware

Malware Config

Signatures

Family: Babuk Locker
RaaS first seen in 2021 initially called Vasa Locker.
ransomware babuk
Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware defense_evasion impact execution

File Deletion
T1070.004

Inhibit System Recovery
T1490

Windows Management Instrumentation
T1047
Renames multiple (164) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Enumerates connected drives 3 TTPs 23 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

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

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e_win.exe

Interacts with shadow copies 3 TTPs 2 IoCs

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

ransomware

File Deletion

T1070.004

Inhibit System Recovery

T1490

Direct Volume Access

T1006

pid	Process
2520	vssadmin.exe
1828	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
5056	e_win.exe
5056	e_win.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	2792	vssvc.exe
Token: SeRestorePrivilege	2792	vssvc.exe
Token: SeAuditPrivilege	2792	vssvc.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 5056 wrote to memory of 1404	5056	e_win.exe	88
PID 1404 wrote to memory of 2520	1404	cmd.exe	92
PID 5056 wrote to memory of 2996	5056	e_win.exe	95
PID 2996 wrote to memory of 1828	2996	cmd.exe	97

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\e_win.exe
"C:\Users\Admin\AppData\Local\Temp\e_win.exe"
1⤵
- Enumerates connected drives
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:5056
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1404
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:2520
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2996
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:1828

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2792

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Windows Management Instrumentation

T1047

Persistence

Privilege Escalation

Defense Evasion

Direct Volume Access

T1006

Indicator Removal

T1070

File Deletion

T1070.004

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

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Downloads

How To Restore Your Files.txt

Path C:\Users\How To Restore Your Files.txt
Size 176B
SHA256 f307988b3a2b03888be7e6e764f6b819d99e292b18555eb6f13bbfa978ec2976
MD5 174c8a0747142e98145a7e764b286504
SHA1 68b52f35f3461cfb6f3b9578d554f701dce534c9
SHA512 027af48d12ced1fdb91f3d9c9b90aa2110c51f5d559d2078b815561a7624dd77d335cb20b0782d4b7e4cca79a927bad8e559d5fa6a4473fe7497c7a707d83ca8
TLSH
T106C08C5CED3D6A6982D030B23B7852A1FE26A2AC075987208C5C810E20605FA8A97CF0
MD5 SHA1 SHA512 TLSH

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