023944c19a0d3e5aef3e051cf61b0f14bfa8fe28212392c4b55fc95325118f15

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21/09/2024, 04:27

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General

Target

2024-09-21_b73b9e58ced99a08a44a65fad79452ce_cryptolocker.exe
Size

71KB
MD5

b73b9e58ced99a08a44a65fad79452ce
SHA1

c7f2d2011460c6131606636a66f1e7a848e4e308
SHA256

023944c19a0d3e5aef3e051cf61b0f14bfa8fe28212392c4b55fc95325118f15
SHA512

955f6f186c4dccb58699288282984dfa237d270fca9cb63e27acbaa418719fb96e9ef6c5a5e5e0816f3749afab4accdb6a320bb40d03ab99fd136282836e3cea
SSDEEP

1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs93:C4Q2c94OtEvwDpj4H8zS

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2780	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
1876	2024-09-21_b73b9e58ced99a08a44a65fad79452ce_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1876-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x0007000000012117-11.dat	upx
behavioral1/memory/1876-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2780-26-0x0000000000500000-0x0000000000510000-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	2024-09-21_b73b9e58ced99a08a44a65fad79452ce_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	misid.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1876 wrote to memory of 2780	1876	2024-09-21_b73b9e58ced99a08a44a65fad79452ce_cryptolocker.exe	30
PID 1876 wrote to memory of 2780	1876	2024-09-21_b73b9e58ced99a08a44a65fad79452ce_cryptolocker.exe	30
PID 1876 wrote to memory of 2780	1876	2024-09-21_b73b9e58ced99a08a44a65fad79452ce_cryptolocker.exe	30
PID 1876 wrote to memory of 2780	1876	2024-09-21_b73b9e58ced99a08a44a65fad79452ce_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-09-21_b73b9e58ced99a08a44a65fad79452ce_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-21_b73b9e58ced99a08a44a65fad79452ce_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1876
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2780

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\misid.exe

Filesize
72KB

MD5
13f590548c049442e87c3208062a479d

SHA1
5e1694c3dc3b2957ca326b832bde9db310465f65

SHA256
8e4e5fcdd36ed9898884f97a0fcc66e45b0b9e97685e594f772cb1e7df4075ca

SHA512
367f4fbe798b40a1c1cc2274fbf8b5391a3fe01ae1411fae9b9fa00afea67fc5191b92ed11e5c20424547d6b089c7a2e9db79012da0fb220c2213ab6820d5213

Download Submit
memory/1876-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1876-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1876-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1876-2-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1876-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2780-25-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2780-18-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2780-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download