d2b95695fd01463b4431515feb95a231ae4495770638d342bb2fc96eb185cb08

Analysis

max time kernel
143s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
29/01/2024, 17:31

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General

Target

2024-01-29_b823ebfbc5d66e8e361b649b3a98ac1e_cryptolocker.exe
Size

34KB
MD5

b823ebfbc5d66e8e361b649b3a98ac1e
SHA1

8d57db1782f04b22f06dc88f4eee43214885e84d
SHA256

d2b95695fd01463b4431515feb95a231ae4495770638d342bb2fc96eb185cb08
SHA512

a55e24a7051dd7f46c2a2d66047418c0329fcc826ad9ef7813b1ebb0bc53d5a8129554e7c47f7d6ac6b8e1534ed194b1afa79fb531b9a641a8e958e17c0da517
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiA0jgg18Q:btB9g/WItCSsAGjX7e9N6

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002321c-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-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation	2024-01-29_b823ebfbc5d66e8e361b649b3a98ac1e_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
2828	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 964 wrote to memory of 2828	964	2024-01-29_b823ebfbc5d66e8e361b649b3a98ac1e_cryptolocker.exe	84
PID 964 wrote to memory of 2828	964	2024-01-29_b823ebfbc5d66e8e361b649b3a98ac1e_cryptolocker.exe	84
PID 964 wrote to memory of 2828	964	2024-01-29_b823ebfbc5d66e8e361b649b3a98ac1e_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-01-29_b823ebfbc5d66e8e361b649b3a98ac1e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-29_b823ebfbc5d66e8e361b649b3a98ac1e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:964
- 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:2828

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
34KB

MD5
c6c778ce084bd0922df0a9d01fc06933

SHA1
d543c8d53647a6cc671d101cda73f607e96ca3a6

SHA256
9313cf1183c1482e0fb696d7fc741da28b667bbe877b9ff025b9e5c3b39f0390

SHA512
2cb9ec5481948e9a46b47e1a638d33af1ec83921a553e4e253b02aaaf061deb385bb6f06a34f9c68e2ff68b341706f176203f4bc531ac1f4cba2d7db60f28744

Download Submit
memory/964-0-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/964-1-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/964-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2828-25-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download