2df4eaffb34e510fae657d80eaaae85bb38546b3e84882525413c1d8e183ee6b

Analysis

max time kernel
92s
max time network
93s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
13-05-2024 14:44

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General

Target

2024-05-13_0452a9bbe1cec35fa9f1f2193df6ee2d_cryptolocker.exe
Size

59KB
MD5

0452a9bbe1cec35fa9f1f2193df6ee2d
SHA1

1d426174c70b5ee8e449092fdb3004dcea05599d
SHA256

2df4eaffb34e510fae657d80eaaae85bb38546b3e84882525413c1d8e183ee6b
SHA512

cd22116f890b26fcdcce577d59f5e058436929a149ef0101a8da91f1a30d4d1c5d01c8cdba5f395131611a345a32ffa6dbd3708667cad5535d4699a17ade12e1
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHxy:btng54SMLr+/AO/kIhfoKMHdh

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000002328e-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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-13_0452a9bbe1cec35fa9f1f2193df6ee2d_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
756	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 3420 wrote to memory of 756	3420	2024-05-13_0452a9bbe1cec35fa9f1f2193df6ee2d_cryptolocker.exe	82
PID 3420 wrote to memory of 756	3420	2024-05-13_0452a9bbe1cec35fa9f1f2193df6ee2d_cryptolocker.exe	82
PID 3420 wrote to memory of 756	3420	2024-05-13_0452a9bbe1cec35fa9f1f2193df6ee2d_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-13_0452a9bbe1cec35fa9f1f2193df6ee2d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-13_0452a9bbe1cec35fa9f1f2193df6ee2d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3420
- 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:756

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
59KB

MD5
9209103a1975de7e05b53c75edec1023

SHA1
2f14850939042f71be9d5129acc711bde8264f7c

SHA256
54611012001a4717a52890cd40d06af2fe44274d4896e47d0fc7abefe8d657b9

SHA512
3d3810a32618af06221112b0cfccf44154e93d0a3730fcdc3cfb7e6d0c5fb474efc868640190a3d3bfc54f532c0656d5072b8bb3d8f4ea7006205e38279bb480

Download Submit
C:\Users\Admin\AppData\Local\Temp\gewosik.exe

Filesize
185B

MD5
f7e8a3d32623083323f19ebc8474fc27

SHA1
f2d83a4d4b7abdaa8125f4bc593dc7ad2d124d2c

SHA256
1733f0d5d3653ec2250de4d7a512ef67e5be81f5bb6f6e254d8ea332059ce0b4

SHA512
5b8ef86a2083fccdd6142085dc5acde034acc6699c93b3e81910595ed525cc4b8a183404437f6bdcbe6e928cab491e9f82521e1dd20ece9104fee16061429aba

Download Submit
memory/756-25-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/3420-0-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/3420-1-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/3420-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download