b124122a7f19b0a4ded2d57e335543e2463f002467884ceb4d0e721bce1c73c6

Analysis

max time kernel
141s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
09/03/2024, 02:47

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General

Target

2024-03-09_ae7013fde62085839ed83f921accf8f7_cryptolocker.exe
Size

37KB
MD5

ae7013fde62085839ed83f921accf8f7
SHA1

42a3f5c75a47f58ba8c128141a37e2d30f4cc1ce
SHA256

b124122a7f19b0a4ded2d57e335543e2463f002467884ceb4d0e721bce1c73c6
SHA512

91753561d355c71dce8620737631d041de2731770896294b23e67be1c3a9b67495710ffb9c7d50683a8f4c0f3c74d87dc98cef26bd0c83660cc72fbac1c13ce0
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkLCn:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkLY

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/1964-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023264-13.dat	CryptoLocker_rule2
behavioral2/memory/1964-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/1964-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023264-13.dat	CryptoLocker_set1
behavioral2/memory/1964-17-0x0000000000500000-0x000000000050B000-memory.dmp	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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-03-09_ae7013fde62085839ed83f921accf8f7_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1968	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 1964 wrote to memory of 1968	1964	2024-03-09_ae7013fde62085839ed83f921accf8f7_cryptolocker.exe	101
PID 1964 wrote to memory of 1968	1964	2024-03-09_ae7013fde62085839ed83f921accf8f7_cryptolocker.exe	101
PID 1964 wrote to memory of 1968	1964	2024-03-09_ae7013fde62085839ed83f921accf8f7_cryptolocker.exe	101

C:\Users\Admin\AppData\Local\Temp\2024-03-09_ae7013fde62085839ed83f921accf8f7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-09_ae7013fde62085839ed83f921accf8f7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1964
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1968

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4036 --field-trial-handle=2676,i,447940133669489189,1353734109898858672,262144 --variations-seed-version /prefetch:8
1⤵
PID:1860

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\asih.exe

Filesize
37KB

MD5
343366a96cb26616d8d2bca7314efdc7

SHA1
724b3b22edc4a9bb1b2689d4aacf15ce18aeb978

SHA256
334ba0af67ee5b90a40952f518d7f48c457d76051bcfbc1dccb1668f1fadd1cf

SHA512
04bbcbdd34b323cafa900a05115f2fceddc7fd8fc2a2a5959d8c2992c8a238467c76ff5b4e4210ad4c4f1e3d83ed0cd7234a055dd5d1d961f4ab8ec223559611

Download Submit
memory/1964-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1964-1-0x00000000007F0000-0x00000000007F6000-memory.dmp

Filesize
24KB

Download
memory/1964-2-0x00000000007F0000-0x00000000007F6000-memory.dmp

Filesize
24KB

Download
memory/1964-3-0x0000000000810000-0x0000000000816000-memory.dmp

Filesize
24KB

Download
memory/1964-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1968-20-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1968-19-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download