b160ef9db1e95c636eb7d476ede13f5babcabf9b3b6eb9fa85649e6fb8f41be0

Analysis

max time kernel
10s
max time network
119s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
11/09/2024, 10:26

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General

Target

2024-09-11_c1d9a7fbfa0030077e6c3ee05b8dbbaf_cryptolocker.exe
Size

44KB
MD5

c1d9a7fbfa0030077e6c3ee05b8dbbaf
SHA1

f264f7c90ed1eae1df0d94173cdeda2dc9b335c6
SHA256

b160ef9db1e95c636eb7d476ede13f5babcabf9b3b6eb9fa85649e6fb8f41be0
SHA512

de1f7ffd09b3c165d5ebc95b3f7e83e73cbe606f22bba136e4fd9113445a1e846d63d3b89e51a65fc09faf5776a167852f3c50a6ec75d781f0b634ed22093c40
SSDEEP

768:b/yC4GyNM01GuQMNXw2PSjHPbSuYlW8PAwwh:b/pYayGig5HjS3NPAdh

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2760	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
2460	2024-09-11_c1d9a7fbfa0030077e6c3ee05b8dbbaf_cryptolocker.exe

Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046
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	2024-09-11_c1d9a7fbfa0030077e6c3ee05b8dbbaf_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	retln.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2460	2024-09-11_c1d9a7fbfa0030077e6c3ee05b8dbbaf_cryptolocker.exe
2760	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2460 wrote to memory of 2760	2460	2024-09-11_c1d9a7fbfa0030077e6c3ee05b8dbbaf_cryptolocker.exe	31
PID 2460 wrote to memory of 2760	2460	2024-09-11_c1d9a7fbfa0030077e6c3ee05b8dbbaf_cryptolocker.exe	31
PID 2460 wrote to memory of 2760	2460	2024-09-11_c1d9a7fbfa0030077e6c3ee05b8dbbaf_cryptolocker.exe	31
PID 2460 wrote to memory of 2760	2460	2024-09-11_c1d9a7fbfa0030077e6c3ee05b8dbbaf_cryptolocker.exe	31

C:\Users\Admin\AppData\Local\Temp\2024-09-11_c1d9a7fbfa0030077e6c3ee05b8dbbaf_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-11_c1d9a7fbfa0030077e6c3ee05b8dbbaf_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2460
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of UnmapMainImage
  PID:2760

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

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\retln.exe

Filesize
44KB

MD5
50ddf5709f132411a48cb8225a54313f

SHA1
4be89ee3c48d7febe857c2e7061306f698add962

SHA256
d75bb911765e550542dc4952783c522fda9d0d52b1deafbc9f703db27497f9a7

SHA512
57f91281e105808b9c332ca085dc1d97d84bc533bca29fcf5b82a1a25a7e77855299fe390c6f212cc320e61bce596b9430e56bc7429eec2b5f0fa3fcdc0efe48

Download Submit
memory/2460-0-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2460-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2460-8-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2760-16-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download