69e55199015bbab8bfc5b3e496526fff6dc05767d8dbad88dafc784ee437444a

Analysis

max time kernel
147s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
24/04/2024, 05:47

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General

Target

2024-04-24_a29b4e73afa09890850d2cb52346e29a_cryptolocker.exe
Size

62KB
MD5

a29b4e73afa09890850d2cb52346e29a
SHA1

f35216fd12e496b5f62fecb5c6e90530acaf43c7
SHA256

69e55199015bbab8bfc5b3e496526fff6dc05767d8dbad88dafc784ee437444a
SHA512

8d1709bca370629755b654eea0a0f83b39d2975a88c43729fd62508364e163f655b9bb495a0ef679650e46803a2d4a7915c8c30f69b1fedd5a5434c8bf809e78
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgtsiZ:BbdDmjr+OtEvwDpjM8Y

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/956-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0009000000023285-13.dat	CryptoLocker_rule2
behavioral2/memory/956-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4344-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/956-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4344-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/956-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x0009000000023285-13.dat	UPX
behavioral2/memory/956-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/4344-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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	2024-04-24_a29b4e73afa09890850d2cb52346e29a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4344	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 956 wrote to memory of 4344	956	2024-04-24_a29b4e73afa09890850d2cb52346e29a_cryptolocker.exe	91
PID 956 wrote to memory of 4344	956	2024-04-24_a29b4e73afa09890850d2cb52346e29a_cryptolocker.exe	91
PID 956 wrote to memory of 4344	956	2024-04-24_a29b4e73afa09890850d2cb52346e29a_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-04-24_a29b4e73afa09890850d2cb52346e29a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-24_a29b4e73afa09890850d2cb52346e29a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:956
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4344

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=1416 --field-trial-handle=3240,i,13319578961094268484,16557498665191861597,262144 --variations-seed-version /prefetch:8
1⤵
PID:3744

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
62KB

MD5
f2cb432c5c1b7230d82d1de7e8194381

SHA1
9fd554f35512ce6fe2bb965675c16ec3e5f5f57a

SHA256
7e5f53d139e855717b967f482f09b88e465f6ed1dddeceeb1090c87fd16bb39e

SHA512
0fb21fb984d9f917a656b138464ed39866d3c5f3ddff366bcb84735d1215c78a081737b1287a71579d0cca97e52603fadc35ae8b41921520a456876740a35a7e

Download Submit
memory/956-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/956-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/956-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/956-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/956-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4344-19-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/4344-22-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/4344-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download