27f3027d489037d3d3e1cfcae2a883572a66a1dbd0113ded221327b7b2cab20a

Analysis

max time kernel
91s
max time network
128s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
21-02-2024 17:50

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General

Target

2024-02-21_57f8dd342d7d5c533aa2ab608c2a3d4c_cryptolocker.exe
Size

60KB
MD5

57f8dd342d7d5c533aa2ab608c2a3d4c
SHA1

fd6bfba5e804a0e197841c327087304ea627d754
SHA256

27f3027d489037d3d3e1cfcae2a883572a66a1dbd0113ded221327b7b2cab20a
SHA512

3280f5bc81b683854dc8c45a316d05fcfb6afbe5f757d7a5ae601a0a12a0e281826393b1ca05ef4b4c96d4f0127a3ea39e65db68b45ca0001fcf3c426ee7d5cb
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHNl8:btng54SMLr+/AO/kIhfoKMHdl

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002323d-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-910440534-423636034-2318342392-1000\Control Panel\International\Geo\Nation	2024-02-21_57f8dd342d7d5c533aa2ab608c2a3d4c_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-910440534-423636034-2318342392-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
4500	gewos.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1624 wrote to memory of 4500	1624	2024-02-21_57f8dd342d7d5c533aa2ab608c2a3d4c_cryptolocker.exe	85
PID 1624 wrote to memory of 4500	1624	2024-02-21_57f8dd342d7d5c533aa2ab608c2a3d4c_cryptolocker.exe	85
PID 1624 wrote to memory of 4500	1624	2024-02-21_57f8dd342d7d5c533aa2ab608c2a3d4c_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-21_57f8dd342d7d5c533aa2ab608c2a3d4c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_57f8dd342d7d5c533aa2ab608c2a3d4c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1624
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:4500

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\gewos.exe

Filesize
60KB

MD5
9963dafac7a427779396c69631e7ce78

SHA1
cea06295eca6305ec81bd136447f60bce22134f7

SHA256
0daa406c6878f7b3add9d73ae49c4ffea2a2928909e232cd4e2d092c11221a76

SHA512
49ba216c35b448c25c2df789b341c758d37922882b5b9434301e64c0ab5b448bc65a46404c5dc981cf639f406c0762d1080833b60ed792fbff3293a2a1cae0c4

Download Submit
memory/1624-0-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/1624-1-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/1624-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4500-21-0x0000000001F30000-0x0000000001F36000-memory.dmp

Filesize
24KB

Download