90cf4d1542d86077f3209a0a3b5e882df6051d01b72e668765d7cbf5ba1fcb57

Analysis

max time kernel
132s
max time network
139s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
13/10/2024, 02:05

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General

Target

2024-10-13_625ceaae0fd2fcfdb46e25ef9c069ba1_cryptolocker.exe
Size

55KB
MD5

625ceaae0fd2fcfdb46e25ef9c069ba1
SHA1

a6ef478cf8125d63f4895176c74c8dca9f882b7d
SHA256

90cf4d1542d86077f3209a0a3b5e882df6051d01b72e668765d7cbf5ba1fcb57
SHA512

7a884c26b9449fb135cd96e67f13fc6ed08a477d273490fd2850d62aa00d52a82b45d946ef93e686cdd9d46cb9d68d59855bacaa7f0fe16b74181ec626da74a4
SSDEEP

768:bco/2n1TCraU6GD1P2wZEjbhxnbcuyD7U9kXDn62tH/1/LpPFPe:b7/y28wZEjbnouy8G76iH/NLpo

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1976	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
784	2024-10-13_625ceaae0fd2fcfdb46e25ef9c069ba1_cryptolocker.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/784-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral1/memory/1976-16-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral1/files/0x000b00000001225f-13.dat	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	2024-10-13_625ceaae0fd2fcfdb46e25ef9c069ba1_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rewok.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
784	2024-10-13_625ceaae0fd2fcfdb46e25ef9c069ba1_cryptolocker.exe
1976	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 784 wrote to memory of 1976	784	2024-10-13_625ceaae0fd2fcfdb46e25ef9c069ba1_cryptolocker.exe	31
PID 784 wrote to memory of 1976	784	2024-10-13_625ceaae0fd2fcfdb46e25ef9c069ba1_cryptolocker.exe	31
PID 784 wrote to memory of 1976	784	2024-10-13_625ceaae0fd2fcfdb46e25ef9c069ba1_cryptolocker.exe	31
PID 784 wrote to memory of 1976	784	2024-10-13_625ceaae0fd2fcfdb46e25ef9c069ba1_cryptolocker.exe	31

C:\Users\Admin\AppData\Local\Temp\2024-10-13_625ceaae0fd2fcfdb46e25ef9c069ba1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-13_625ceaae0fd2fcfdb46e25ef9c069ba1_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:784
- 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:1976

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

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Downloads

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

Filesize
55KB

MD5
13a9511d19ad3116cb8bd36bc3268851

SHA1
0fb43ef29465fd9437768cb2460a6b3d94ad9ded

SHA256
2578bc50fe3233c7ba13537d5b55d46363087dc55190b1d32543dc97df1fc80d

SHA512
c1d187299ea76a096713f5f57d32603ae34a776cfa39dc5c0a3d3cbb197aa27d39909be65f8659eaa995750a24321e6ca1d06c62980c8a4ef3884770aa6a4059

Download Submit
memory/784-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/784-1-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/784-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/784-9-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/1976-16-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1976-25-0x00000000003D0000-0x00000000003D6000-memory.dmp

Filesize
24KB

Download