973a4359e0bb05edcb2e78508e999de9dae0ef5d1e0f4fb482b88ac97ced8513

Analysis

max time kernel
147s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
11-03-2024 02:23

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General

Target

2024-03-11_62ea7260ba1618714cd1be6bf873d50f_cryptolocker.exe
Size

57KB
MD5

62ea7260ba1618714cd1be6bf873d50f
SHA1

6d4d60372490a8c122580a23ea06280d2f3086db
SHA256

973a4359e0bb05edcb2e78508e999de9dae0ef5d1e0f4fb482b88ac97ced8513
SHA512

ee73237a91173ef4f68f30c293e53c07c602de047b986b8b487a5d389bdede07fbf6e6f4437f41af9b0530e9f0be43504014a0a053243b08fc7fdd0b507bf380
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUH9:btng54SMLr+/AO/kIhfoKMHdU

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023200-12.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-1-5-21-2727153400-192325109-1870347593-1000\Control Panel\International\Geo\Nation	2024-03-11_62ea7260ba1618714cd1be6bf873d50f_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2727153400-192325109-1870347593-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
4368	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 2736 wrote to memory of 4368	2736	2024-03-11_62ea7260ba1618714cd1be6bf873d50f_cryptolocker.exe	90
PID 2736 wrote to memory of 4368	2736	2024-03-11_62ea7260ba1618714cd1be6bf873d50f_cryptolocker.exe	90
PID 2736 wrote to memory of 4368	2736	2024-03-11_62ea7260ba1618714cd1be6bf873d50f_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-03-11_62ea7260ba1618714cd1be6bf873d50f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-11_62ea7260ba1618714cd1be6bf873d50f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2736
- 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:4368

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
58KB

MD5
a7168bb654fb045241fd69b7d27253c0

SHA1
3f32b195e4f98a38404746f3c74922ca4b73b678

SHA256
37e10fad764734940b32aad0e0dc163a064bcfb73668e0f387348e3c3b8b77ee

SHA512
ecf170b9b04e7a48428f8d10ceed8bc57fb55cbc7c32f2447da7095bad476cb1f7a9b46cb94938ce168993daeb2fd30f13f252d4a51b368c5bf5b339a743aba9

Download Submit
memory/2736-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/2736-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/2736-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4368-20-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download