065287223427832c6707b2ecb48721c013abf2cae3108a2d97850eae3effc8fd

Analysis

max time kernel
156s
max time network
170s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
21/04/2024, 03:29

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General

Target

2024-04-21_0aea1a6000351510a704fe6658a01459_cryptolocker.exe
Size

71KB
MD5

0aea1a6000351510a704fe6658a01459
SHA1

ff86064d47a88107b804994abe0d3da67e449139
SHA256

065287223427832c6707b2ecb48721c013abf2cae3108a2d97850eae3effc8fd
SHA512

0da2062da2ed4e751a54f42db353a36852f32514b41fe67379a37f589f9f3190a48e031f7d43f75ce4e0ee95209a539522d5d2ac23e32395af39acfa624f2dd7
SSDEEP

1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs9S:C4Q2c94OtEvwDpj4H8zH

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3708-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3708-10-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023246-15.dat	CryptoLocker_rule2
behavioral2/memory/1192-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/3708-10-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1192-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/3708-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3708-10-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x0008000000023246-15.dat	UPX
behavioral2/memory/1192-28-0x0000000000500000-0x0000000000510000-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	2024-04-21_0aea1a6000351510a704fe6658a01459_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1192	misid.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3708-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3708-10-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0008000000023246-15.dat	upx
behavioral2/memory/1192-28-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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 3708 wrote to memory of 1192	3708	2024-04-21_0aea1a6000351510a704fe6658a01459_cryptolocker.exe	93
PID 3708 wrote to memory of 1192	3708	2024-04-21_0aea1a6000351510a704fe6658a01459_cryptolocker.exe	93
PID 3708 wrote to memory of 1192	3708	2024-04-21_0aea1a6000351510a704fe6658a01459_cryptolocker.exe	93

C:\Users\Admin\AppData\Local\Temp\2024-04-21_0aea1a6000351510a704fe6658a01459_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-21_0aea1a6000351510a704fe6658a01459_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3708
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1192

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=1408 --field-trial-handle=2744,i,16362475727591565961,3676688664819797550,262144 --variations-seed-version /prefetch:8
1⤵
PID:1996

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\misid.exe

Filesize
71KB

MD5
baa96763b4c8bfce65adeecd6f605cb1

SHA1
a7aa6cbe2a3a339f482428ee9ef8ba2a0f9ab775

SHA256
56515b4cd0406d1edd5f3dab88a66153d4b8c7f5831170e33e3eb4e715e26b7d

SHA512
01f0526b203e2cfd3d56ad22ee151d87bfd08c5b62aead2ece9f5998c25cd875584d7b731174da4c8294b6ff84f8d00476bcdbadc7f109b3405f1b236a90cc24

Download Submit
memory/1192-20-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1192-21-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/1192-28-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3708-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3708-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/3708-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/3708-3-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/3708-10-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download