bb5ddad1bd051017faa31dea4b0069a4ddb87a4d7e741276b1eba01168df37ce

Analysis

max time kernel
8s
max time network
154s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05-10-2024 03:52

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General

Target

2024-10-05_c8f9b01829ac12e9a2fa02bdf9657d6d_cryptolocker.exe
Size

34KB
MD5

c8f9b01829ac12e9a2fa02bdf9657d6d
SHA1

e56f81d1c3961bb833f5a4e67e632894216ea608
SHA256

bb5ddad1bd051017faa31dea4b0069a4ddb87a4d7e741276b1eba01168df37ce
SHA512

624d5d05cc2a5027861f5f728f631237725045c96d160f752ad85ffc3f7fd39eda0a573d0765960d7f97c6ae91d4c60b37fb06915e447bcc5a592e93b51fd43c
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznStEkcsgYKx:b/yC4GyNM01GuQMNXw2PSjSKkcJYKx

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2280	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
1972	2024-10-05_c8f9b01829ac12e9a2fa02bdf9657d6d_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	2024-10-05_c8f9b01829ac12e9a2fa02bdf9657d6d_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	retln.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1972	2024-10-05_c8f9b01829ac12e9a2fa02bdf9657d6d_cryptolocker.exe
2280	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1972 wrote to memory of 2280	1972	2024-10-05_c8f9b01829ac12e9a2fa02bdf9657d6d_cryptolocker.exe	29
PID 1972 wrote to memory of 2280	1972	2024-10-05_c8f9b01829ac12e9a2fa02bdf9657d6d_cryptolocker.exe	29
PID 1972 wrote to memory of 2280	1972	2024-10-05_c8f9b01829ac12e9a2fa02bdf9657d6d_cryptolocker.exe	29
PID 1972 wrote to memory of 2280	1972	2024-10-05_c8f9b01829ac12e9a2fa02bdf9657d6d_cryptolocker.exe	29

C:\Users\Admin\AppData\Local\Temp\2024-10-05_c8f9b01829ac12e9a2fa02bdf9657d6d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-05_c8f9b01829ac12e9a2fa02bdf9657d6d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1972
- 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:2280

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
35KB

MD5
626532e10b897d5d3ceaf06b31380271

SHA1
1bba8f55c25d5f8e56f72075df935d2edb1b018c

SHA256
c40d6271f580df3897f68d2c2495a0cc7c1f04f7d7f41ce5abf5cac0068f4506

SHA512
fd6c054e6eb0280aa0984bee178a5db3106802fe7dcb6f25b0e2e4ba69c031c4f3a09acddaad50e5735f9534da43aa8707a8025c008613fc38309f6a02cacc03

Download Submit
memory/1972-0-0x00000000003A0000-0x00000000003A6000-memory.dmp

Filesize
24KB

Download
memory/1972-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1972-8-0x00000000003A0000-0x00000000003A6000-memory.dmp

Filesize
24KB

Download
memory/2280-16-0x00000000002E0000-0x00000000002E6000-memory.dmp

Filesize
24KB

Download