7ee88337c85d2332da3fe1b1aaab8f2593cfb3d08afddef49a4e483895f38618

Analysis

max time kernel
3s
max time network
71s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
14/03/2024, 08:37

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General

Target

2024-03-14_61f3d6546ea0fb154ab5cc9da945c7ed_cryptolocker.exe
Size

41KB
MD5

61f3d6546ea0fb154ab5cc9da945c7ed
SHA1

376460e977a712b675573b4006bc0fdcb15740cb
SHA256

7ee88337c85d2332da3fe1b1aaab8f2593cfb3d08afddef49a4e483895f38618
SHA512

86cae49ab161a26df6cd636f16a5af6e0721401967a788979015f90fcdca7fcf1817666c343c7bf4021efc6c911b522720d9359e10cad158ec7c5d85218da543
SSDEEP

768:b/yC4GyNM01GuQMNXw2PSjHPbSuYlW8PA9Do:b/pYayGig5HjS3NPA9Do

Score

9^/10

discovery

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000012320-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2540	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
2084	2024-03-14_61f3d6546ea0fb154ab5cc9da945c7ed_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
2084	2024-03-14_61f3d6546ea0fb154ab5cc9da945c7ed_cryptolocker.exe
2540	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2084 wrote to memory of 2540	2084	2024-03-14_61f3d6546ea0fb154ab5cc9da945c7ed_cryptolocker.exe	28
PID 2084 wrote to memory of 2540	2084	2024-03-14_61f3d6546ea0fb154ab5cc9da945c7ed_cryptolocker.exe	28
PID 2084 wrote to memory of 2540	2084	2024-03-14_61f3d6546ea0fb154ab5cc9da945c7ed_cryptolocker.exe	28
PID 2084 wrote to memory of 2540	2084	2024-03-14_61f3d6546ea0fb154ab5cc9da945c7ed_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-14_61f3d6546ea0fb154ab5cc9da945c7ed_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-14_61f3d6546ea0fb154ab5cc9da945c7ed_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2084
- 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:2540

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

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

Filesize
42KB

MD5
3ae515e8074afdc7aeb75474cf36acda

SHA1
3f1e36d366e1b7e9502ed725539183ec247e909b

SHA256
c452d996d90b3bcc1ae00a647a4486dcf471c6fca8d20ab023df0ec91708fb06

SHA512
08777b2694618efb769298c219cd0deb2c0a1218b3c8843cd66fa98a35c34fe205c180e3c55746ee40e9c21af4dce63e1d2f3ce0a7758a1fd0c32cf62424f0e1

Download Submit
memory/2084-0-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2084-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2084-8-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2540-23-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download