a6e6e68735910268be32ea7396c8ecafd5dde5bb3ae2c416505c69682281af67

Analysis

max time kernel
148s
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
16/06/2024, 15:26

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-06-16_41a00a463b354c3a10127fb46394f584_cryptolocker.exe
Size

39KB
MD5

41a00a463b354c3a10127fb46394f584
SHA1

0ea653166b2f0180725677cf9ef17b47a700b594
SHA256

a6e6e68735910268be32ea7396c8ecafd5dde5bb3ae2c416505c69682281af67
SHA512

3e3cc3bd370126d2818e9f2b808c959b25d8e229649ea6ce76deb3594e19f23aff840a42de3e69626b32a99ecc7dc7f4931beef3385fe12b28a726721f364c2f
SSDEEP

768:qTVbxjgQNQXtckstOOtEvwDpjAaD3TUogs/VXpAPWRio:qTJu9cvMOtEvwDpjppVXzRR

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4416-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4416-10-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023268-14.dat	CryptoLocker_rule2
behavioral2/memory/3316-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4416-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4416-10-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000023268-14.dat	CryptoLocker_set1
behavioral2/memory/3316-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4416-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/4416-10-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/files/0x0008000000023268-14.dat	UPX
behavioral2/memory/3316-27-0x0000000000500000-0x000000000050F000-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	2024-06-16_41a00a463b354c3a10127fb46394f584_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3316	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4416-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/4416-10-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x0008000000023268-14.dat	upx
behavioral2/memory/3316-27-0x0000000000500000-0x000000000050F000-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 4416 wrote to memory of 3316	4416	2024-06-16_41a00a463b354c3a10127fb46394f584_cryptolocker.exe	91
PID 4416 wrote to memory of 3316	4416	2024-06-16_41a00a463b354c3a10127fb46394f584_cryptolocker.exe	91
PID 4416 wrote to memory of 3316	4416	2024-06-16_41a00a463b354c3a10127fb46394f584_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-06-16_41a00a463b354c3a10127fb46394f584_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-16_41a00a463b354c3a10127fb46394f584_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4416
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3316

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=3816 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:8
1⤵
PID:4548

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
39KB

MD5
74fa9811ecc107b32941ce29bf3870e0

SHA1
6207f3f34807e6167412a7e5979dfbb7fa8f0699

SHA256
809e8c43888f78d236c310ea71d93584c5e6ecc89fec55ea86ad0fec26f3828a

SHA512
8d75f0729c79a3a114e4e42563a0098fd4fe74767601dcd34732a9b2b93cc3b24be74a4c1e94dff099778912b3f9132b41a84565671b069a222bde14497eed6c

Download Submit
memory/3316-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3316-20-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/3316-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4416-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4416-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/4416-2-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/4416-3-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/4416-10-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download