1d1fc11f1cfca0dd4221cc40f9d3097cf65a62877e42fa8e7ce9462c8e68730b

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
18/02/2024, 23:40

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General

Target

2024-02-18_cd95b43a12b11efd4fcac11f0530d3c8_cryptolocker.exe
Size

117KB
MD5

cd95b43a12b11efd4fcac11f0530d3c8
SHA1

47fce96c2786c38c6e9d480f00d8612b14da4205
SHA256

1d1fc11f1cfca0dd4221cc40f9d3097cf65a62877e42fa8e7ce9462c8e68730b
SHA512

f3ded4ebcc985ade01866cb02983571c3b1ac047ae54d39a528ebe9612024da98515a2ad1c2c25f517cbe83ba06427a8d35faef98fb18151f1da1d9c050008f4
SSDEEP

1536:z6QFElP6n+gKmddpMOtEvwDpj3GYQbN/PKwNgp01W:z6a+CdOOtEvwDpjczI

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2404-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0008000000012255-11.dat	CryptoLocker_rule2
behavioral1/memory/2404-14-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2272-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2272-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2404-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x0008000000012255-11.dat	CryptoLocker_set1
behavioral1/memory/2404-14-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2272-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2272-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2404-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x0008000000012255-11.dat	UPX
behavioral1/memory/2404-14-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2272-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2272-25-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2272	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2404	2024-02-18_cd95b43a12b11efd4fcac11f0530d3c8_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2404-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x0008000000012255-11.dat	upx
behavioral1/memory/2404-14-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2272-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2272-25-0x0000000000500000-0x0000000000510000-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 4 IoCs

description	pid	Process	procid_target
PID 2404 wrote to memory of 2272	2404	2024-02-18_cd95b43a12b11efd4fcac11f0530d3c8_cryptolocker.exe	28
PID 2404 wrote to memory of 2272	2404	2024-02-18_cd95b43a12b11efd4fcac11f0530d3c8_cryptolocker.exe	28
PID 2404 wrote to memory of 2272	2404	2024-02-18_cd95b43a12b11efd4fcac11f0530d3c8_cryptolocker.exe	28
PID 2404 wrote to memory of 2272	2404	2024-02-18_cd95b43a12b11efd4fcac11f0530d3c8_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-18_cd95b43a12b11efd4fcac11f0530d3c8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_cd95b43a12b11efd4fcac11f0530d3c8_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2404
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2272

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
117KB

MD5
2a928b6e764bbb0297db26d4f90dc380

SHA1
29d6b5a09541f32192a2b46cf061876fbe9e1b6b

SHA256
d7177afaaad2c950cee0acd10c08582c23a0ed70bc76f95424aee934b2934581

SHA512
c4cb1d99eba64cf8afc4919ecd2186b82ea85526f186cf4a5549b0f8ce0e8e5de246578ce0e243e374f958c298126e2cd3efd6d397a061f223b34eca82053e1b

Download Submit
memory/2272-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2272-18-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2272-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2404-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2404-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2404-2-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2404-5-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2404-14-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download