f496934abd6ecfb36af548a2f0c6464adf6c800b5c46b4c4ca916a211fa92b7a

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
22/01/2024, 20:42

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-01-22_b6d3a15c7a9d43802c6d00d5f9efce78_cryptolocker.exe
Size

61KB
MD5

b6d3a15c7a9d43802c6d00d5f9efce78
SHA1

2efbd7461e3d66a73c7d9d58bdf4a879978e145d
SHA256

f496934abd6ecfb36af548a2f0c6464adf6c800b5c46b4c4ca916a211fa92b7a
SHA512

81a99ab3690ca6f42bd841aa5abb803bedaf051c97d2ecc0b629bfb55d97ac36148878e019e3caf642d429ff1dd491f1687a3d3c5cddf75de20a3db79d35c38b
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjYibAoS:1nK6a+qdOOtEvwDpj4

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1964-1-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1964-15-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x00080000000120f8-14.dat	CryptoLocker_rule2
behavioral1/memory/2736-16-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2736-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1964-1-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/memory/1964-15-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/files/0x00080000000120f8-14.dat	CryptoLocker_set1
behavioral1/memory/2736-16-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/memory/2736-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1964-1-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/memory/1964-15-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/files/0x00080000000120f8-14.dat	UPX
behavioral1/memory/2736-16-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/memory/2736-26-0x0000000000500000-0x000000000050F311-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2736	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1964	2024-01-22_b6d3a15c7a9d43802c6d00d5f9efce78_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1964-1-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/1964-15-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x00080000000120f8-14.dat	upx
behavioral1/memory/2736-16-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2736-26-0x0000000000500000-0x000000000050F311-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 1964 wrote to memory of 2736	1964	2024-01-22_b6d3a15c7a9d43802c6d00d5f9efce78_cryptolocker.exe	28
PID 1964 wrote to memory of 2736	1964	2024-01-22_b6d3a15c7a9d43802c6d00d5f9efce78_cryptolocker.exe	28
PID 1964 wrote to memory of 2736	1964	2024-01-22_b6d3a15c7a9d43802c6d00d5f9efce78_cryptolocker.exe	28
PID 1964 wrote to memory of 2736	1964	2024-01-22_b6d3a15c7a9d43802c6d00d5f9efce78_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-22_b6d3a15c7a9d43802c6d00d5f9efce78_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-22_b6d3a15c7a9d43802c6d00d5f9efce78_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1964
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2736

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

Loading Replay Monitor...

Downloads

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

Filesize
61KB

MD5
7dfb5319ba15cb48c21e6a89ffb6b8e2

SHA1
0efd1111a1fde66a4b852d080373ad11333e8513

SHA256
627b02c72e6c27381eb1210e9034efac8ca4d13d36a8cbb27eb4137f2c835e83

SHA512
52c0aea4029d563955ba28da85aed7bfcedb9aa017558e7af19c59450ec44d3c97969b14782be14dcd9eba0e910cadcb05e3af3a21c31333571425289e4eb0c7

Download Submit
memory/1964-0-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/1964-1-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/1964-2-0x0000000000450000-0x0000000000456000-memory.dmp

Filesize
24KB

Download
memory/1964-4-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/1964-15-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2736-16-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2736-18-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/2736-25-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2736-26-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download