60035616e53c079fb271cc7313cc92b3d4b98cedcecc36540ff997cff08b9599

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
19/02/2024, 16:46

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General

Target

2024-02-19_a7dae5357bcb7f481293ae9ce00505ba_cryptolocker.exe
Size

126KB
MD5

a7dae5357bcb7f481293ae9ce00505ba
SHA1

77ff2fc0cc9a0b2d96491601fe77d7870f74e638
SHA256

60035616e53c079fb271cc7313cc92b3d4b98cedcecc36540ff997cff08b9599
SHA512

0c184dacda8ef0b380bacca5ae152b49b3ff5a4e49514c541b96139c0ecb5ef67095e65fe2f46cb09d2082162eae4f435cc968fccaaccf961f85fcefc7b51863
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp699GNtL1eL:AnBdOOtEvwDpj6zh

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2172-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000012255-11.dat	CryptoLocker_rule2
behavioral1/memory/2172-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2248-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2248-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2172-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000a000000012255-11.dat	CryptoLocker_set1
behavioral1/memory/2172-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2248-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2248-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2172-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x000a000000012255-11.dat	UPX
behavioral1/memory/2172-15-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2248-16-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2248-26-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2248	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2172	2024-02-19_a7dae5357bcb7f481293ae9ce00505ba_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2172-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000a000000012255-11.dat	upx
behavioral1/memory/2172-15-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2248-16-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2248-26-0x0000000000500000-0x000000000050F000-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 2172 wrote to memory of 2248	2172	2024-02-19_a7dae5357bcb7f481293ae9ce00505ba_cryptolocker.exe	28
PID 2172 wrote to memory of 2248	2172	2024-02-19_a7dae5357bcb7f481293ae9ce00505ba_cryptolocker.exe	28
PID 2172 wrote to memory of 2248	2172	2024-02-19_a7dae5357bcb7f481293ae9ce00505ba_cryptolocker.exe	28
PID 2172 wrote to memory of 2248	2172	2024-02-19_a7dae5357bcb7f481293ae9ce00505ba_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-19_a7dae5357bcb7f481293ae9ce00505ba_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_a7dae5357bcb7f481293ae9ce00505ba_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2172
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2248

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
126KB

MD5
2616d1703903f5bbbb0a583888f2eb70

SHA1
ea47a93e724b5bf19e87b8017ac572be97854847

SHA256
a08ca8537a122741dc9cf5c16bd0d947b9cb898fbc5264d968bc4fd79ff51bf6

SHA512
83b4b6012c04481f67cf27f07d587f4e238602ead956f8d7a0b3f3237fb1bf7b05f1432d03c3eda1c549cf02c3f8e8fa864fea06e23263dac758a279e1602a62

Download Submit
memory/2172-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2172-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2172-2-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2172-4-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2172-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2248-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2248-19-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/2248-18-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2248-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download