babuk | a3788d8cf37d691627bdbc5add07b598fdde66bdfcdb05299b0976715b392a61

Analysis

max time kernel
121s
max time network
163s
platform
windows10_x64
resource
win10-en-20211208
submitted
15-12-2021 06:21

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General

Target

18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
Size

79KB
MD5

e749820eb5214ce88ab2e6a109a2a31c
SHA1

fb971681274419d82692085d7c8391c61fd0ba3a
SHA256

18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f
SHA512

056e4f0f20c853fbad054987340a0519d3f960e8255b47f1a8923acc7515fdc2637bbb43a6eac8485eea5e5b1e5310317c2dfc6cf11a5cef70cb90d42babc8c3

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 27 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe

description	ioc	process
File opened for modification	C:\Users\Admin\Pictures\PublishTest.tiff	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened for modification	C:\Users\Admin\Pictures\OptimizeRestart.tiff.babyk	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File renamed	C:\Users\Admin\Pictures\PublishTest.tiff => C:\Users\Admin\Pictures\PublishTest.tiff.babyk	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened for modification	C:\Users\Admin\Pictures\ResolveUnprotect.crw.babyk	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened for modification	C:\Users\Admin\Pictures\SplitMeasure.png.babyk	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened for modification	C:\Users\Admin\Pictures\OptimizeRestart.tiff	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened for modification	C:\Users\Admin\Pictures\SyncTrace.tiff	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened for modification	C:\Users\Admin\Pictures\CompressUnprotect.png.babyk	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File renamed	C:\Users\Admin\Pictures\CompressUnprotect.png => C:\Users\Admin\Pictures\CompressUnprotect.png.babyk	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened for modification	C:\Users\Admin\Pictures\EnablePing.tif.babyk	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened for modification	C:\Users\Admin\Pictures\RepairUninstall.raw.babyk	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File renamed	C:\Users\Admin\Pictures\SplitMeasure.png => C:\Users\Admin\Pictures\SplitMeasure.png.babyk	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened for modification	C:\Users\Admin\Pictures\SyncTrace.tiff.babyk	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File renamed	C:\Users\Admin\Pictures\ConvertToSubmit.crw => C:\Users\Admin\Pictures\ConvertToSubmit.crw.babyk	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File renamed	C:\Users\Admin\Pictures\ConvertFromAssert.crw => C:\Users\Admin\Pictures\ConvertFromAssert.crw.babyk	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File renamed	C:\Users\Admin\Pictures\LimitCompare.png => C:\Users\Admin\Pictures\LimitCompare.png.babyk	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File renamed	C:\Users\Admin\Pictures\SyncTrace.tiff => C:\Users\Admin\Pictures\SyncTrace.tiff.babyk	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File renamed	C:\Users\Admin\Pictures\UpdateClose.tif => C:\Users\Admin\Pictures\UpdateClose.tif.babyk	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened for modification	C:\Users\Admin\Pictures\ConvertFromAssert.crw.babyk	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File renamed	C:\Users\Admin\Pictures\EnablePing.tif => C:\Users\Admin\Pictures\EnablePing.tif.babyk	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened for modification	C:\Users\Admin\Pictures\LimitCompare.png.babyk	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File renamed	C:\Users\Admin\Pictures\OptimizeRestart.tiff => C:\Users\Admin\Pictures\OptimizeRestart.tiff.babyk	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened for modification	C:\Users\Admin\Pictures\PublishTest.tiff.babyk	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened for modification	C:\Users\Admin\Pictures\UpdateClose.tif.babyk	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened for modification	C:\Users\Admin\Pictures\ConvertToSubmit.crw.babyk	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File renamed	C:\Users\Admin\Pictures\RepairUninstall.raw => C:\Users\Admin\Pictures\RepairUninstall.raw.babyk	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File renamed	C:\Users\Admin\Pictures\ResolveUnprotect.crw => C:\Users\Admin\Pictures\ResolveUnprotect.crw.babyk	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.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:

18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe

description	ioc	process
File opened (read-only)	\??\T:	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened (read-only)	\??\Y:	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened (read-only)	\??\U:	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened (read-only)	\??\P:	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened (read-only)	\??\F:	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened (read-only)	\??\K:	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened (read-only)	\??\L:	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened (read-only)	\??\Z:	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened (read-only)	\??\B:	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened (read-only)	\??\G:	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened (read-only)	\??\V:	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened (read-only)	\??\N:	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened (read-only)	\??\Q:	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened (read-only)	\??\W:	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened (read-only)	\??\E:	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened (read-only)	\??\I:	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened (read-only)	\??\A:	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened (read-only)	\??\X:	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened (read-only)	\??\M:	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened (read-only)	\??\R:	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened (read-only)	\??\O:	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened (read-only)	\??\S:	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened (read-only)	\??\H:	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
File opened (read-only)	\??\J:	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.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

3508 vssadmin.exe
3924 vssadmin.exe

pid	process
3508	vssadmin.exe
3924	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe

pid	process
2824	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
2824	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 1140 vssvc.exe
Token: SeRestorePrivilege 1140 vssvc.exe
Token: SeAuditPrivilege 1140 vssvc.exe

description	pid	process
Token: SeBackupPrivilege	1140	vssvc.exe
Token: SeRestorePrivilege	1140	vssvc.exe
Token: SeAuditPrivilege	1140	vssvc.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.execmd.execmd.exe

description	pid	process	target process
PID 2824 wrote to memory of 824	2824	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe	cmd.exe
PID 2824 wrote to memory of 824	2824	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe	cmd.exe
PID 824 wrote to memory of 3508	824	cmd.exe	vssadmin.exe
PID 824 wrote to memory of 3508	824	cmd.exe	vssadmin.exe
PID 2824 wrote to memory of 1180	2824	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe	cmd.exe
PID 2824 wrote to memory of 1180	2824	18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe	cmd.exe
PID 1180 wrote to memory of 3924	1180	cmd.exe	vssadmin.exe
PID 1180 wrote to memory of 3924	1180	cmd.exe	vssadmin.exe

C:\Users\Admin\AppData\Local\Temp\18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe
"C:\Users\Admin\AppData\Local\Temp\18e282e6806903ff00a78b91f6d0ad1bc3aae4b4846d6a5705c036a88138605f.exe"
1⤵
- Modifies extensions of user files
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2824
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:824
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:3508
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1180
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:3924

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1140

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/824-115-0x0000000000000000-mapping.dmp

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memory/1180-117-0x0000000000000000-mapping.dmp

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memory/3508-116-0x0000000000000000-mapping.dmp

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memory/3924-118-0x0000000000000000-mapping.dmp

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