4d4fac0965c15bce86f271fdd43cb056302cd50d4960e15bc124b0dc01d52455

Analysis

max time kernel
149s
max time network
155s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
12-10-2024 04:44

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General

Target

2024-10-12_0932bcb0d10dff75accd480b9660fb70_cryptolocker.exe
Size

52KB
MD5

0932bcb0d10dff75accd480b9660fb70
SHA1

78f736647693ffd7c15550173f3044fca514b30c
SHA256

4d4fac0965c15bce86f271fdd43cb056302cd50d4960e15bc124b0dc01d52455
SHA512

1eef289fcb682d3d1981581128b9d625d4fd6ece23c37e600c321cb7e1fa0893e9cde6fe095b3a1e891f169ef4e33e08bf14be84f3afe841665ef163116ce04b
SSDEEP

768:bco/2n1TCraU6GD1P2wZEjbhxnbcuyD7U9kXDn62tH/1/LpP+S:b7/y28wZEjbnouy8G76iH/NLpr

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2836	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2860	2024-10-12_0932bcb0d10dff75accd480b9660fb70_cryptolocker.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2860-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral1/files/0x000d0000000133b8-11.dat	upx
behavioral1/memory/2836-16-0x0000000000400000-0x000000000040E000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-10-12_0932bcb0d10dff75accd480b9660fb70_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rewok.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2860	2024-10-12_0932bcb0d10dff75accd480b9660fb70_cryptolocker.exe
2836	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2860 wrote to memory of 2836	2860	2024-10-12_0932bcb0d10dff75accd480b9660fb70_cryptolocker.exe	30
PID 2860 wrote to memory of 2836	2860	2024-10-12_0932bcb0d10dff75accd480b9660fb70_cryptolocker.exe	30
PID 2860 wrote to memory of 2836	2860	2024-10-12_0932bcb0d10dff75accd480b9660fb70_cryptolocker.exe	30
PID 2860 wrote to memory of 2836	2860	2024-10-12_0932bcb0d10dff75accd480b9660fb70_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-10-12_0932bcb0d10dff75accd480b9660fb70_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-12_0932bcb0d10dff75accd480b9660fb70_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2860
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of UnmapMainImage
  PID:2836

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
52KB

MD5
14a3c288599cdbefbea252219ebf6a1c

SHA1
684a6cd22aa4100360a917c17327a694d6b02859

SHA256
840c3505030663c381b8eefadfed37c4936e9dca461c919bc126aa49f5a89757

SHA512
329c42bfd64467dc4179a3530903fccb1b42953a76ce2ffa17654b3d469bc7488a699dae170874f734e8c31d67eef27a0ff97cc06e064e7ec278d79772e511cc

Download Submit
memory/2836-16-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2836-18-0x0000000001CC0000-0x0000000001CC6000-memory.dmp

Filesize
24KB

Download
memory/2860-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2860-1-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2860-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2860-9-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download