8401c76a4e827855b41bec2be042d41f0de0afc21e10c4d222e5ba15cfa33b17

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
09/04/2024, 11:39

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-04-09_7fe56f7a9961425bee27a9bb84508450_cryptolocker.exe
Size

66KB
MD5

7fe56f7a9961425bee27a9bb84508450
SHA1

c7ed9f2f5f2feff1104f0e95689d5c2daeb1ef29
SHA256

8401c76a4e827855b41bec2be042d41f0de0afc21e10c4d222e5ba15cfa33b17
SHA512

c21248dcd2815e9eb8d44e436e4ecca22dfd8eaab069eef6ba01feb5e20d4cd7723051105c878e77e799f4da794801a7a8b7104abd6947013deb5b1d3dba7af1
SSDEEP

768:quVbxjgQNQXtckstOOtEvwDpjAaDOK6PsED3VK2+ZtyOjgO4r9vFAg2rq6W1A1Pt:quJu9cvMOtEvwDpjWYTjipvF2bx1PQAt

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1048-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1048-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000012241-11.dat	CryptoLocker_rule2
behavioral1/memory/2960-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2960-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1048-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1048-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c000000012241-11.dat	CryptoLocker_set1
behavioral1/memory/2960-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2960-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1048-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/1048-15-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x000c000000012241-11.dat	UPX
behavioral1/memory/2960-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2960-26-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2960	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1048	2024-04-09_7fe56f7a9961425bee27a9bb84508450_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1048-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/1048-15-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000c000000012241-11.dat	upx
behavioral1/memory/2960-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2960-26-0x0000000000500000-0x000000000050F000-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 1048 wrote to memory of 2960	1048	2024-04-09_7fe56f7a9961425bee27a9bb84508450_cryptolocker.exe	28
PID 1048 wrote to memory of 2960	1048	2024-04-09_7fe56f7a9961425bee27a9bb84508450_cryptolocker.exe	28
PID 1048 wrote to memory of 2960	1048	2024-04-09_7fe56f7a9961425bee27a9bb84508450_cryptolocker.exe	28
PID 1048 wrote to memory of 2960	1048	2024-04-09_7fe56f7a9961425bee27a9bb84508450_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-09_7fe56f7a9961425bee27a9bb84508450_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-09_7fe56f7a9961425bee27a9bb84508450_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1048
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2960

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

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

Filesize
67KB

MD5
22d4c46a83f6507f66a16513bd2dbb28

SHA1
5416a53de7641dd017510cc29133c36498be93de

SHA256
f0ae11398a50b75a8e14e616333e135e547badd6a36eba58323c28e79b432726

SHA512
7dd70a56266fca78e9fb9d416904fdb76a8bd587ce313aef87f1f631cafac1dfeeb0a1c52b4d4c2ef71d8810a526954a77380aca233765af4c43336dd298cd0d

Download Submit
memory/1048-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1048-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1048-2-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/1048-4-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1048-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1048-13-0x0000000001D30000-0x0000000001D3F000-memory.dmp

Filesize
60KB

Download
memory/1048-27-0x0000000001D30000-0x0000000001D3F000-memory.dmp

Filesize
60KB

Download
memory/2960-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2960-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download