bc1c4ed1cbf100a65baa75e0aef95f7d9a993ac9ba3af735260430bfeb4c3a24

Analysis

max time kernel
1s
max time network
106s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
12-01-2024 05:54

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General

Target

2024-01-11_0e2420cd561ba2f9b561013241a358ba_cryptolocker.exe
Size

37KB
MD5

0e2420cd561ba2f9b561013241a358ba
SHA1

860fe27cfcabad6cbeed194d98f9bf9b9333b7fa
SHA256

bc1c4ed1cbf100a65baa75e0aef95f7d9a993ac9ba3af735260430bfeb4c3a24
SHA512

732dc89a5816698cef33323f2a9ee1f0e68be13ccb61c090e687f09082e675cbb525c016041fd4982b2dbe2b45468c10e7d48094bf8b7a6c5dc0bd174c7722f5
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznHzl6AJvDSuYlS:b/yC4GyNM01GuQMNXw2PSjHPbSuYlS

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2680	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
2504	2024-01-11_0e2420cd561ba2f9b561013241a358ba_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

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2504	2024-01-11_0e2420cd561ba2f9b561013241a358ba_cryptolocker.exe
2680	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2504 wrote to memory of 2680	2504	2024-01-11_0e2420cd561ba2f9b561013241a358ba_cryptolocker.exe	20
PID 2504 wrote to memory of 2680	2504	2024-01-11_0e2420cd561ba2f9b561013241a358ba_cryptolocker.exe	20
PID 2504 wrote to memory of 2680	2504	2024-01-11_0e2420cd561ba2f9b561013241a358ba_cryptolocker.exe	20
PID 2504 wrote to memory of 2680	2504	2024-01-11_0e2420cd561ba2f9b561013241a358ba_cryptolocker.exe	20

C:\Users\Admin\AppData\Local\Temp\2024-01-11_0e2420cd561ba2f9b561013241a358ba_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-11_0e2420cd561ba2f9b561013241a358ba_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2504
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2680

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
21KB

MD5
5b0cf26117baef4648d5895adb053e1e

SHA1
aef891a90d1746d7208f12afc0da2537c6cfe0ef

SHA256
e9ab383db793140e0ad2f8e7bafbbdb8327d191e5135d367cd0a141cde1cd719

SHA512
c70478380eb401d1bec4de0d2a035b5b55b3c84a8f204e25435a9daa669fabb12aaae8758813a21929ece5f0ee6054275f7cce2dc7e7902051645f5aff049662

Download Submit
C:\Users\Admin\AppData\Local\Temp\retln.exe

Filesize
5KB

MD5
d967faab7cd74560c6207eca665bf691

SHA1
c5542ab3db41abc37ebef83f9568b9b040b678dd

SHA256
17dc809c4e6735ca3a5eff2834d740b5cc056e16ca53d4373cea4ad53aa6b4aa

SHA512
6474db55d18606fff1e0db8dd902ba59229ab5c14432c31e3a235c89fcda31ff595873dee273980da1b7c71fe72667d5accf0ad7f214973871e9bd5729450bac

Download Submit
\Users\Admin\AppData\Local\Temp\retln.exe

Filesize
37KB

MD5
1baccd0fb3f4640b9a3bd2fde58268b1

SHA1
bab2985f0e1bc2893efc91c11b12bb410f7b528e

SHA256
24933e0fe37f1ba5cdfef928c65dad7874d0ae004f4b61e5111975f71ec2c557

SHA512
81094737d54d620431d6605bfbe3bd4ac97b174806d723acbe262d39a60b5736490add13c254abefa8193b217fa7f172e258cc32daf938b6116c9609038f8a71

Download Submit
memory/2504-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2504-5-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download
memory/2504-0-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download
memory/2680-23-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download