5bab66826ebb565ea71f35db1ae8f97b3b2292e1ec7e064198c5a1868505c5e1

Analysis

max time kernel
133s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
16/04/2024, 04:11

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General

Target

2024-04-16_d782aeed7191c1c538333afa887fbd5d_cryptolocker.exe
Size

45KB
MD5

d782aeed7191c1c538333afa887fbd5d
SHA1

bd205da7731f604f8c730a7da8def8f40611cdce
SHA256

5bab66826ebb565ea71f35db1ae8f97b3b2292e1ec7e064198c5a1868505c5e1
SHA512

825a4cbbb75a96b0b20f233694f2acc82e65769e450f461ea35ddd38ea7bc5542759eeb5e1fd8b1aea04d5b968e1c5bb7cf4adc02fde7cd51fdd9d7bb7e2733c
SSDEEP

768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/DpkY:P6Q0ElP6G+gJQMOtEvwDpjB8WMlT

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1236-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002352e-13.dat	CryptoLocker_rule2
behavioral2/memory/1236-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1752-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1236-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002352e-13.dat	CryptoLocker_set1
behavioral2/memory/1236-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1752-26-0x0000000000500000-0x000000000050B000-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-1-5-21-1230272463-3683322193-511842230-1000\Control Panel\International\Geo\Nation	2024-04-16_d782aeed7191c1c538333afa887fbd5d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1752	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 1236 wrote to memory of 1752	1236	2024-04-16_d782aeed7191c1c538333afa887fbd5d_cryptolocker.exe	95
PID 1236 wrote to memory of 1752	1236	2024-04-16_d782aeed7191c1c538333afa887fbd5d_cryptolocker.exe	95
PID 1236 wrote to memory of 1752	1236	2024-04-16_d782aeed7191c1c538333afa887fbd5d_cryptolocker.exe	95

C:\Users\Admin\AppData\Local\Temp\2024-04-16_d782aeed7191c1c538333afa887fbd5d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-16_d782aeed7191c1c538333afa887fbd5d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1236
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1752

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 --field-trial-handle=3820,i,7623570663554471258,14132729592875588564,262144 --variations-seed-version --mojo-platform-channel-handle=4372 /prefetch:8
1⤵
PID:1712

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
45KB

MD5
81347d8197acbd80300419ed34ed3296

SHA1
dbade0b79f21fbbb246496b5f9f5d1b97560c176

SHA256
4c1e92240708f8112f726f2f6fc6c1af7a74b20cc6f684091921878221891b55

SHA512
8234b8af49af8ed662f9aee27179ade72b18f71c33c6eb93ac64652b415da920cfedb35e5a343befcb4461c011262237f3a582fa8443f1b454d5199aa8257641

Download Submit
memory/1236-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1236-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1236-2-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1236-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/1236-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1752-19-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/1752-25-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/1752-26-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download