8750d5628c3a6c9e6a03e18ff57e849120d4229922dff90a027a2ed69dca5d3c

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
27/05/2024, 04:52

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General

Target

2024-05-27_d3d8a1cf4b82b52f4dda2f643aa0eee3_cryptolocker.exe
Size

94KB
MD5

d3d8a1cf4b82b52f4dda2f643aa0eee3
SHA1

af1d7cad6e05290fe107a15502f15b3e4fa6a32f
SHA256

8750d5628c3a6c9e6a03e18ff57e849120d4229922dff90a027a2ed69dca5d3c
SHA512

5860d5a3e0434208699848b9bc634c0dc2d6b88008c6de252255434dc228faad646a8b10aa8cfc46cf5b0dd2631911bbb8e83ecc73d1bc497bfb6072b53467c4
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp0+oy:AnBdOOtEvwDpj6zBy

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2108-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d00000001226c-11.dat	CryptoLocker_rule2
behavioral1/memory/2108-12-0x0000000001DD0000-0x0000000001DDF000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2108-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2092-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2108-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000d00000001226c-11.dat	CryptoLocker_set1
behavioral1/memory/2108-12-0x0000000001DD0000-0x0000000001DDF000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2108-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2092-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2108-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x000d00000001226c-11.dat	UPX
behavioral1/memory/2108-12-0x0000000001DD0000-0x0000000001DDF000-memory.dmp	UPX
behavioral1/memory/2108-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2092-27-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2092	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2108	2024-05-27_d3d8a1cf4b82b52f4dda2f643aa0eee3_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2108-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000d00000001226c-11.dat	upx
behavioral1/memory/2108-12-0x0000000001DD0000-0x0000000001DDF000-memory.dmp	upx
behavioral1/memory/2108-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2092-27-0x0000000000500000-0x000000000050F000-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 2108 wrote to memory of 2092	2108	2024-05-27_d3d8a1cf4b82b52f4dda2f643aa0eee3_cryptolocker.exe	28
PID 2108 wrote to memory of 2092	2108	2024-05-27_d3d8a1cf4b82b52f4dda2f643aa0eee3_cryptolocker.exe	28
PID 2108 wrote to memory of 2092	2108	2024-05-27_d3d8a1cf4b82b52f4dda2f643aa0eee3_cryptolocker.exe	28
PID 2108 wrote to memory of 2092	2108	2024-05-27_d3d8a1cf4b82b52f4dda2f643aa0eee3_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-27_d3d8a1cf4b82b52f4dda2f643aa0eee3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-27_d3d8a1cf4b82b52f4dda2f643aa0eee3_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2108
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2092

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
94KB

MD5
6cb8c8000f389d4f2c73a728ad9da349

SHA1
f18e874bb26d28187a936dfdce200384c1128d28

SHA256
c93f21d8fcc20da34280f5413a2a7921459bbf16f109f094ed32bf6813bffacc

SHA512
6c6202c271813e32d979cab0377a8efc045900bc957b215be5ace1f0e1f5a54516ceb9c89fc984bfa67342da29d8e660277e1bc00a18baf0e55ee66eff68697b

Download Submit
memory/2092-19-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2092-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2092-26-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2108-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2108-2-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/2108-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2108-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2108-12-0x0000000001DD0000-0x0000000001DDF000-memory.dmp

Filesize
60KB

Download
memory/2108-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download