da482a4dd6529ca49e7deb1a0e49ad9374dcbbf2623d8b0249d918f74c3c3df9

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
20-05-2024 07:02

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General

Target

2024-05-20_dd1b111f1ceee531216db8efc0d1a753_cryptolocker.exe
Size

79KB
MD5

dd1b111f1ceee531216db8efc0d1a753
SHA1

f593dc1b7e642743b4601fb95923cc4a4fc073b9
SHA256

da482a4dd6529ca49e7deb1a0e49ad9374dcbbf2623d8b0249d918f74c3c3df9
SHA512

f41540cb5b10c8c8b7901650c7d9b59972b1f285fe4ade07ee49908f909673bb4e96bc9683dd98b362f6df3cd0fade60386844f443e54eef665fe06a3325e904
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOAkXtBdJcRP:T6a+rdOOtEvwDpjNt+

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/744-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002328e-13.dat	CryptoLocker_rule2
behavioral2/memory/744-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4604-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/744-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002328e-13.dat	CryptoLocker_set1
behavioral2/memory/744-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4604-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/744-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000800000002328e-13.dat	UPX
behavioral2/memory/744-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/4604-26-0x0000000000500000-0x0000000000510000-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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-20_dd1b111f1ceee531216db8efc0d1a753_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4604	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/744-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000800000002328e-13.dat	upx
behavioral2/memory/744-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4604-26-0x0000000000500000-0x0000000000510000-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 744 wrote to memory of 4604	744	2024-05-20_dd1b111f1ceee531216db8efc0d1a753_cryptolocker.exe	83
PID 744 wrote to memory of 4604	744	2024-05-20_dd1b111f1ceee531216db8efc0d1a753_cryptolocker.exe	83
PID 744 wrote to memory of 4604	744	2024-05-20_dd1b111f1ceee531216db8efc0d1a753_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-20_dd1b111f1ceee531216db8efc0d1a753_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-20_dd1b111f1ceee531216db8efc0d1a753_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:744
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4604

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
79KB

MD5
7d52a2aa92943d71f0be59b547eecf52

SHA1
d79855c8d485384a3d6908952b250030a20f371f

SHA256
217fa6faaf10c1e574d4f80e04ecd3c846ad2b5c2a3697f76f96530d3574438c

SHA512
1d17f26fa8a07c4798e175662acbc02c7832b8b58ac031e7ed4a8499f69c67beb5817f1c97f62fd3ed9e85147000d1831f2440b1dc1bfb5d48a4ea600fa3b830

Download Submit
memory/744-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/744-1-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/744-2-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/744-9-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/744-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4604-25-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/4604-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download