37575dffb811232e9cbad949dff96a601f1e191e1f6c40f563ef4a741aca6103

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
28/04/2024, 19:34

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General

Target

2024-04-28_d4037b18f337c126657185b132f63680_cryptolocker.exe
Size

85KB
MD5

d4037b18f337c126657185b132f63680
SHA1

8b06f35aced3557091dde141b5d1d9e6419581e0
SHA256

37575dffb811232e9cbad949dff96a601f1e191e1f6c40f563ef4a741aca6103
SHA512

9cfa5dfa8e79b79480a86251ba482eefd1817d2412b111f93239240600b64d4f53aaa91cb372c1744769b116725b984100f158711345cedcd87f998670738ab6
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjyaLccVNl6aO:V6a+pOtEvwDpjvpi

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c00000001228a-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000c00000001228a-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2556	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
3012	2024-04-28_d4037b18f337c126657185b132f63680_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3012 wrote to memory of 2556	3012	2024-04-28_d4037b18f337c126657185b132f63680_cryptolocker.exe	28
PID 3012 wrote to memory of 2556	3012	2024-04-28_d4037b18f337c126657185b132f63680_cryptolocker.exe	28
PID 3012 wrote to memory of 2556	3012	2024-04-28_d4037b18f337c126657185b132f63680_cryptolocker.exe	28
PID 3012 wrote to memory of 2556	3012	2024-04-28_d4037b18f337c126657185b132f63680_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-28_d4037b18f337c126657185b132f63680_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_d4037b18f337c126657185b132f63680_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3012
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2556

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
85KB

MD5
6c9127c0f34b10f7b14a67f72b49bef0

SHA1
5c4fe5e5ddf7536ca24f1fcf802b83e76429a9b6

SHA256
7f16a2011e5a44041a3b01469a4f9edb950f4ba3dcb1c857e2437a342b896789

SHA512
497301bb725cb15c6445e727360fe02d22c5f31eb9eeebb569961f2805b64f688a5d6eeb67284291f57709a829de280cbe753b392cdc527c889014d752428e66

Download Submit
memory/2556-15-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2556-22-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3012-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/3012-1-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/3012-8-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download