ead8e3e9958652825e62446df553d7e99bd690b6873f4b4b77110f7ff6501f6a

Analysis

max time kernel
143s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
02/02/2024, 10:37

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General

Target

2024-02-02_aac9890e46e0f6aa7580bbba5a5ee0b5_cryptolocker.exe
Size

60KB
MD5

aac9890e46e0f6aa7580bbba5a5ee0b5
SHA1

4db404abc9f3065a0b746eeb17f5ebda7fef5aba
SHA256

ead8e3e9958652825e62446df553d7e99bd690b6873f4b4b77110f7ff6501f6a
SHA512

e0c69f608444c519739ed0824ca51a82fc0275f7e3ab3da640543b79cae3b2a74ad760b0a38e2cda50d63d91dc9ed17dcce0c353578ad279d424a446dbd580d3
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHu:btng54SMLr+/AO/kIhfoKMHdD

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023203-12.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-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation	2024-02-02_aac9890e46e0f6aa7580bbba5a5ee0b5_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
4092	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 1560 wrote to memory of 4092	1560	2024-02-02_aac9890e46e0f6aa7580bbba5a5ee0b5_cryptolocker.exe	84
PID 1560 wrote to memory of 4092	1560	2024-02-02_aac9890e46e0f6aa7580bbba5a5ee0b5_cryptolocker.exe	84
PID 1560 wrote to memory of 4092	1560	2024-02-02_aac9890e46e0f6aa7580bbba5a5ee0b5_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-02_aac9890e46e0f6aa7580bbba5a5ee0b5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-02_aac9890e46e0f6aa7580bbba5a5ee0b5_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1560
- 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:4092

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
bf7ec7a43c8ef2f5f9fdfeff181df7c2

SHA1
28fee08dd2dca994c436612207c2cc309c34aa89

SHA256
069a54e43cd2038be0e89508fac8b607f4f3bd504c45201112d751a804bc14e2

SHA512
23856eec5d7b040b28c969044fdd20f9b821d721eb409a2061085b94376256cb0a77945b890fd48dfc9012547cbf684c0934e0f06aa0dbdbbf3d8bcf70e5b9e0

Download Submit
memory/1560-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/1560-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/1560-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4092-21-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download