a40ccb1a0f92a06521b2feeaccb5f4208573344f562d6c6d94709ab5f9b65f42

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
05-08-2023 10:51

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General

Target

6b325f5ee5c7b26589e809d1af76b4c8_cryptolocker_JC.exe
Size

99KB
MD5

6b325f5ee5c7b26589e809d1af76b4c8
SHA1

8019dba09139e31b1e33b6722087a4d288edf9af
SHA256

a40ccb1a0f92a06521b2feeaccb5f4208573344f562d6c6d94709ab5f9b65f42
SHA512

715ebcb8f61933f616c6a0f6601f28c2f7bb312081b8b341f6916d7d7f99811dcc8cc177630307e7bea8bd1deb454971b4ba3f57f039ca253fddf8a072318fb0
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsalRn58+g:1nK6a+qdOOtEvwDpj3

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2472	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1640	6b325f5ee5c7b26589e809d1af76b4c8_cryptolocker_JC.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1640-55-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x0007000000012026-65.dat	upx
behavioral1/memory/2472-70-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x0007000000012026-69.dat	upx
behavioral1/files/0x0007000000012026-78.dat	upx
behavioral1/memory/2472-80-0x0000000000500000-0x000000000050F311-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 1640 wrote to memory of 2472	1640	6b325f5ee5c7b26589e809d1af76b4c8_cryptolocker_JC.exe	28
PID 1640 wrote to memory of 2472	1640	6b325f5ee5c7b26589e809d1af76b4c8_cryptolocker_JC.exe	28
PID 1640 wrote to memory of 2472	1640	6b325f5ee5c7b26589e809d1af76b4c8_cryptolocker_JC.exe	28
PID 1640 wrote to memory of 2472	1640	6b325f5ee5c7b26589e809d1af76b4c8_cryptolocker_JC.exe	28

C:\Users\Admin\AppData\Local\Temp\6b325f5ee5c7b26589e809d1af76b4c8_cryptolocker_JC.exe
"C:\Users\Admin\AppData\Local\Temp\6b325f5ee5c7b26589e809d1af76b4c8_cryptolocker_JC.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1640
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2472

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

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

Filesize
99KB

MD5
937b621bb3ec6356d6971e15e7f0233c

SHA1
a92a3c1c105ab13560f8238ca2c564845aadff06

SHA256
8135ee879da4db178478a4f43312bd34a489f50a788922ef6535e669c0324db4

SHA512
6cacb3b8033436cfac2e93eaadb07461a2d8573890a93e1a8bd04be8f491cc1b4b36e721ca8b1765579d0b21c884aaec949d497bdb905cc6f7b4325c69bcc79d

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

Filesize
99KB

MD5
937b621bb3ec6356d6971e15e7f0233c

SHA1
a92a3c1c105ab13560f8238ca2c564845aadff06

SHA256
8135ee879da4db178478a4f43312bd34a489f50a788922ef6535e669c0324db4

SHA512
6cacb3b8033436cfac2e93eaadb07461a2d8573890a93e1a8bd04be8f491cc1b4b36e721ca8b1765579d0b21c884aaec949d497bdb905cc6f7b4325c69bcc79d

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

Filesize
99KB

MD5
937b621bb3ec6356d6971e15e7f0233c

SHA1
a92a3c1c105ab13560f8238ca2c564845aadff06

SHA256
8135ee879da4db178478a4f43312bd34a489f50a788922ef6535e669c0324db4

SHA512
6cacb3b8033436cfac2e93eaadb07461a2d8573890a93e1a8bd04be8f491cc1b4b36e721ca8b1765579d0b21c884aaec949d497bdb905cc6f7b4325c69bcc79d

Download Submit
memory/1640-56-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/1640-55-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/1640-54-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1640-58-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1640-68-0x00000000026C0000-0x00000000026D0000-memory.dmp

Filesize
64KB

Download
memory/1640-79-0x00000000026C0000-0x00000000026D0000-memory.dmp

Filesize
64KB

Download
memory/2472-70-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2472-80-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download