2c94d8734837501bb564e7a1637e2f693d8c9266922dab5673ee3c9fbb3340c9

Analysis

max time kernel
141s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
26/05/2024, 06:52

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General

Target

2024-05-26_f6b70be83645207532d9e8a5e060940e_cryptolocker.exe
Size

51KB
MD5

f6b70be83645207532d9e8a5e060940e
SHA1

83e76ca6dcdd2fb2832a6546f84caed9131ad9d2
SHA256

2c94d8734837501bb564e7a1637e2f693d8c9266922dab5673ee3c9fbb3340c9
SHA512

3b2b2fb7e9b5776a3c6a9f8b83e50882c4bd8d262122586db1a1eec8239b527509be131bed0f7b13ddff09503ee3ec1497e9286114197d504cdb212768d3e6cb
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjeJQ7pojkRaa:V6a+pOtEvwDpjf

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000002325f-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000002325f-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-05-26_f6b70be83645207532d9e8a5e060940e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3120	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 3264 wrote to memory of 3120	3264	2024-05-26_f6b70be83645207532d9e8a5e060940e_cryptolocker.exe	91
PID 3264 wrote to memory of 3120	3264	2024-05-26_f6b70be83645207532d9e8a5e060940e_cryptolocker.exe	91
PID 3264 wrote to memory of 3120	3264	2024-05-26_f6b70be83645207532d9e8a5e060940e_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-05-26_f6b70be83645207532d9e8a5e060940e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-26_f6b70be83645207532d9e8a5e060940e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3264
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3120

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=3944 --field-trial-handle=3084,i,4016110471176367543,14287608422419064331,262144 --variations-seed-version /prefetch:8
1⤵
PID:5008

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
52KB

MD5
2ee530054e45ca44388e7eebc69c3ce9

SHA1
b9608f53f4e4bf015c31d3d0910c5a557c61d88f

SHA256
a9cb02aceaab4763a767b91740570e57030ab0367e4d6214f7e6b76a39b86893

SHA512
769264b13159068e4619adf32c7a5b3b5e7078f178f43ceb0cd14b744fafbd99e4bf7a5585fb5da669949a83043464c20af5956fc2fe61e867050402228a8337

Download Submit
memory/3120-23-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/3120-17-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/3264-0-0x00000000007F0000-0x00000000007F6000-memory.dmp

Filesize
24KB

Download
memory/3264-1-0x00000000007F0000-0x00000000007F6000-memory.dmp

Filesize
24KB

Download
memory/3264-2-0x0000000000810000-0x0000000000816000-memory.dmp

Filesize
24KB

Download