d2771c975f7477fce33e8d2090dd599aa5f60d0f2c2baf17789aafa61a1b46b7

Analysis

max time kernel
150s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
11/06/2024, 09:29

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General

Target

2024-06-11_d2a6b2e74c3fd3975c0e209eb265418d_cryptolocker.exe
Size

74KB
MD5

d2a6b2e74c3fd3975c0e209eb265418d
SHA1

985c37c1ce4d3fc15c6e56619a4083566dc2aa58
SHA256

d2771c975f7477fce33e8d2090dd599aa5f60d0f2c2baf17789aafa61a1b46b7
SHA512

3f42cd3ff9c504c10ffe3be5c6d37e18d1f9af918b73788c738d760f2fc659ce48ef48e3bfa9f4f4849571b653b0870c613f817a5a43b0bdc5bfc6d442485653
SSDEEP

768:u6LsoEEeegiZPvEhHSG+gZgtOOtEvwDpjeY10Y/YMsP3:u6QFElP6n+gWMOtEvwDpjJGYQb/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000233c1-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000233c1-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 1 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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	2024-06-11_d2a6b2e74c3fd3975c0e209eb265418d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2312	asih.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 1540 wrote to memory of 2312	1540	2024-06-11_d2a6b2e74c3fd3975c0e209eb265418d_cryptolocker.exe	81
PID 1540 wrote to memory of 2312	1540	2024-06-11_d2a6b2e74c3fd3975c0e209eb265418d_cryptolocker.exe	81
PID 1540 wrote to memory of 2312	1540	2024-06-11_d2a6b2e74c3fd3975c0e209eb265418d_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-06-11_d2a6b2e74c3fd3975c0e209eb265418d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-11_d2a6b2e74c3fd3975c0e209eb265418d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1540
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2312

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
74KB

MD5
5755e65d9d561a8794e766ab3f94dab8

SHA1
90c831fb5f2be76a16217258b91bf7bd36b7fece

SHA256
6d7f61d0a30dd244ee3e790ccc6d0575560578d34f3d1b21a45285e19d4ec465

SHA512
dee5d8f898fda54bdf3299273130c9b7235551d53d2da1c01f9170476c8306d9a5dbc1354d72bb312666ea4a09ddbdc8d3cb83e0380c9baf41e441c990088b73

Download Submit
memory/1540-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1540-1-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/1540-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2312-17-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

Filesize
24KB

Download
memory/2312-23-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download