8288147a339b64d93bc0eee11b9c109f6a72a2e2e1e432de592c7c85e552934f

Analysis

max time kernel
149s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
13/03/2024, 08:37

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-03-13_8e120f4431a4a5abd003815f78efd521_cryptolocker.exe
Size

100KB
MD5

8e120f4431a4a5abd003815f78efd521
SHA1

7c419de5e2656d789ee9ae5b0d981cd67ad9682a
SHA256

8288147a339b64d93bc0eee11b9c109f6a72a2e2e1e432de592c7c85e552934f
SHA512

806a467f3a50ca713c92f7fce73b967811468027d9a82303a4d198ece95dc73c327e3741efd8627783a0918483fec15f3894c211c3d2db1fa7ccc3a948296eb9
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgpwqWsviPeBO:AnBdOOtEvwDpj6z9

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/32-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/32-10-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00030000000227e7-14.dat	CryptoLocker_rule2
behavioral2/memory/656-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/32-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/32-10-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x00030000000227e7-14.dat	CryptoLocker_set1
behavioral2/memory/656-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/32-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/32-10-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/files/0x00030000000227e7-14.dat	UPX
behavioral2/memory/656-27-0x0000000000500000-0x000000000050F000-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	2024-03-13_8e120f4431a4a5abd003815f78efd521_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
656	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/32-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/32-10-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x00030000000227e7-14.dat	upx
behavioral2/memory/656-27-0x0000000000500000-0x000000000050F000-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 32 wrote to memory of 656	32	2024-03-13_8e120f4431a4a5abd003815f78efd521_cryptolocker.exe	101
PID 32 wrote to memory of 656	32	2024-03-13_8e120f4431a4a5abd003815f78efd521_cryptolocker.exe	101
PID 32 wrote to memory of 656	32	2024-03-13_8e120f4431a4a5abd003815f78efd521_cryptolocker.exe	101

C:\Users\Admin\AppData\Local\Temp\2024-03-13_8e120f4431a4a5abd003815f78efd521_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-13_8e120f4431a4a5abd003815f78efd521_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:32
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:656

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=3744 --field-trial-handle=3192,i,2785050981002401924,4037047756083432660,262144 --variations-seed-version /prefetch:8
1⤵
PID:3428

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
100KB

MD5
86fd6dcd9725923795fffb2964e1c798

SHA1
9025a2a33423f79abb489dac5613525445b7fbc9

SHA256
6d76f96e930e25fbc9e79ceb7e8320323b3dfbf8c4b77fee03b480bd3f22fcae

SHA512
fcd3307fb53a81edf20dbb234fe7bde894e57a0c22c4c22c287aaff0d1b4763ee1d8fca7541f16d0ec6a45c8cc5da2207bc5ee29e072271d24838535c054c2ab

Download Submit
memory/32-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/32-1-0x0000000002310000-0x0000000002316000-memory.dmp

Filesize
24KB

Download
memory/32-2-0x0000000002310000-0x0000000002316000-memory.dmp

Filesize
24KB

Download
memory/32-3-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/32-10-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/656-19-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/656-20-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download
memory/656-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download