18627af19b193afbe36d3154060b7090f3962e9547e68ba3c7e57415c1974873

Analysis

max time kernel
139s
max time network
133s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
08/03/2024, 16:34

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General

Target

2024-03-08_b91170a87ea8cb5892768578369c56b9_cryptolocker.exe
Size

34KB
MD5

b91170a87ea8cb5892768578369c56b9
SHA1

ba4c255208af908fc5eed0404bb9351a78ccd175
SHA256

18627af19b193afbe36d3154060b7090f3962e9547e68ba3c7e57415c1974873
SHA512

a53dfe9d00d66815337e7c50ecd488482c742fd1541554897111776f99978d11312b7ec92969e37b6e06adbe1f2f0add8b28c8cbcb7fdab0fbb62173429f170d
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiA0f9HMe:btB9g/WItCSsAGjX7e9N8se

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e980-12.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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-03-08_b91170a87ea8cb5892768578369c56b9_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
1492	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 2876 wrote to memory of 1492	2876	2024-03-08_b91170a87ea8cb5892768578369c56b9_cryptolocker.exe	89
PID 2876 wrote to memory of 1492	2876	2024-03-08_b91170a87ea8cb5892768578369c56b9_cryptolocker.exe	89
PID 2876 wrote to memory of 1492	2876	2024-03-08_b91170a87ea8cb5892768578369c56b9_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-08_b91170a87ea8cb5892768578369c56b9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-08_b91170a87ea8cb5892768578369c56b9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2876
- 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:1492

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
e268ff4ae7d939a55de6e5d179dac4d7

SHA1
4de8c7cc264179e1d884bfa7bc7f5c030610d296

SHA256
d29796c8c119d0b30fb351e549e1ebfcb764e3ccbdd6280d630424295a109485

SHA512
bbc7a72daf223f2fa435cdf29b356b27cfcd9bd67e5a321f40d18b5136144ddb38758962e6e1f06781b406b06a4f011715e002f110aa973d7e10ac94e1d19411

Download Submit
memory/1492-22-0x0000000002020000-0x0000000002026000-memory.dmp

Filesize
24KB

Download
memory/2876-0-0x00000000021F0000-0x00000000021F6000-memory.dmp

Filesize
24KB

Download
memory/2876-1-0x00000000021F0000-0x00000000021F6000-memory.dmp

Filesize
24KB

Download
memory/2876-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download