ba63b627e4c0077fb920e09049fafb3b98bad2bc7f7a83562359a2e9ecffbb58

Analysis

max time kernel
153s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
16/05/2024, 21:35

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General

Target

2024-05-16_f2ab38ec4bf58f4df24385a31734b5fc_cryptolocker.exe
Size

46KB
MD5

f2ab38ec4bf58f4df24385a31734b5fc
SHA1

d79b123835a7fa535a350a49c8bcb6d9efa37ea9
SHA256

ba63b627e4c0077fb920e09049fafb3b98bad2bc7f7a83562359a2e9ecffbb58
SHA512

de14d79c5b078481b523b53b11e33fca33580fa9a38f294aec6913a96b976dc46ca718fce609195fa54bbe65567f4e2b9bdcdafb7ab9bc96fd321670ed3a960d
SSDEEP

768:P6LsoEEeegiZPvEhHS5+Mh/QtOOtEvwDpjBpaD3TUogs/VXpAPN1:P6QFElP6k+MRQMOtEvwDpjBQpVXE1

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3292-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3292-2-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023276-14.dat	CryptoLocker_rule2
behavioral2/memory/3292-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1180-27-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/3292-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3292-2-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000023276-14.dat	CryptoLocker_set1
behavioral2/memory/3292-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1180-27-0x0000000000500000-0x000000000050B000-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	2024-05-16_f2ab38ec4bf58f4df24385a31734b5fc_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1180	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 3292 wrote to memory of 1180	3292	2024-05-16_f2ab38ec4bf58f4df24385a31734b5fc_cryptolocker.exe	93
PID 3292 wrote to memory of 1180	3292	2024-05-16_f2ab38ec4bf58f4df24385a31734b5fc_cryptolocker.exe	93
PID 3292 wrote to memory of 1180	3292	2024-05-16_f2ab38ec4bf58f4df24385a31734b5fc_cryptolocker.exe	93

C:\Users\Admin\AppData\Local\Temp\2024-05-16_f2ab38ec4bf58f4df24385a31734b5fc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-16_f2ab38ec4bf58f4df24385a31734b5fc_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3292
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1180

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=3952 --field-trial-handle=2656,i,16940681401824032220,151921362336696246,262144 --variations-seed-version /prefetch:8
1⤵
PID:1740

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
46KB

MD5
df983b1fcc4aeb7e268d1edf19ea5319

SHA1
e31fc59a397208f43c292e491c877f431e7be00b

SHA256
33a39549f3a114b9b19816df61ee345c48867c615c8eb0cd2d58958c341646eb

SHA512
cb93cf07be71124ead0af1995612ef4bb32339ebe511f7e7f2122614ae64d781a026b35d77419107b683e546b0b38d1d33940c336273a69a9d9b049c96b1fd9d

Download Submit
memory/1180-19-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/1180-25-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/1180-27-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3292-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3292-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/3292-3-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/3292-2-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3292-4-0x0000000000810000-0x0000000000816000-memory.dmp

Filesize
24KB

Download
memory/3292-26-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download