d81b1eaf976e857fe8868a5a9486698d65a382d6d6f1f0aab613920c27bce331

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
24-05-2024 14:32

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General

Target

2024-05-24_927d3d40d16848dfc3fb8cab49cc3a1e_cryptolocker.exe
Size

90KB
MD5

927d3d40d16848dfc3fb8cab49cc3a1e
SHA1

ec8101e4a07ca30e59afb04b4331592b8c8824cb
SHA256

d81b1eaf976e857fe8868a5a9486698d65a382d6d6f1f0aab613920c27bce331
SHA512

42b1c97e6636063e4dca144523fabf0c7f1b503ac2d15ca626bd6eee50338b73011a5474286cf8904b702ed74e7c9d9966d27a7bffecfa1a5285a3d40e4600e9
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgIif:AnBdOOtEvwDpj6zh

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2220-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c00000001269e-11.dat	CryptoLocker_rule2
behavioral1/memory/2220-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2744-25-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2220-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c00000001269e-11.dat	CryptoLocker_set1
behavioral1/memory/2220-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2744-25-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2220-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x000c00000001269e-11.dat	UPX
behavioral1/memory/2220-15-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2744-25-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2744	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2220	2024-05-24_927d3d40d16848dfc3fb8cab49cc3a1e_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2220-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000c00000001269e-11.dat	upx
behavioral1/memory/2220-15-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2744-25-0x0000000000500000-0x000000000050F000-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 4 IoCs

description	pid	Process	procid_target
PID 2220 wrote to memory of 2744	2220	2024-05-24_927d3d40d16848dfc3fb8cab49cc3a1e_cryptolocker.exe	28
PID 2220 wrote to memory of 2744	2220	2024-05-24_927d3d40d16848dfc3fb8cab49cc3a1e_cryptolocker.exe	28
PID 2220 wrote to memory of 2744	2220	2024-05-24_927d3d40d16848dfc3fb8cab49cc3a1e_cryptolocker.exe	28
PID 2220 wrote to memory of 2744	2220	2024-05-24_927d3d40d16848dfc3fb8cab49cc3a1e_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-24_927d3d40d16848dfc3fb8cab49cc3a1e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_927d3d40d16848dfc3fb8cab49cc3a1e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2220
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2744

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
90KB

MD5
a459265e9e0e90910d31a1b6e18c73fb

SHA1
2eb7764e4fb105ca03b675b606b9fa613b824cce

SHA256
04bf51ffa6813edc29aaf9fd7f62d08c6942549db8f154b15bab99fcedaf6cc4

SHA512
00c2d229e138f1a5b429bca9685943a9ab6c1e6dc2793c841f4b095a11263c5d79909c7e1c389d60c13367d2ad4ccee56516c3f4755c21d212b2b9157600025b

Download Submit
memory/2220-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2220-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2220-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2220-2-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2220-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2744-25-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download