30134e894fd35895502262110d151a0074c4550b6200fab8eb41ab761ec44453

Analysis

max time kernel
120s
max time network
124s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
25-03-2024 11:01

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General

Target

2024-03-25_f2cab6464f097950e3fdfaec2a264c02_cryptolocker.exe
Size

29KB
MD5

f2cab6464f097950e3fdfaec2a264c02
SHA1

965a31fdee4e6f84941519b797b3c659a9745bd8
SHA256

30134e894fd35895502262110d151a0074c4550b6200fab8eb41ab761ec44453
SHA512

0eed5c194de6355e4d951b1180844441c124abbd2a49a3b60f5dbea2749133c7bb45a8ec655f0e6fc5f6d3041a955d3f79d894b465969d47199b91950e8f7000
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zznum+Ua:b/yC4GyNM01GuQMNXum+v

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012267-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2524	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
856	2024-03-25_f2cab6464f097950e3fdfaec2a264c02_cryptolocker.exe

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
856	2024-03-25_f2cab6464f097950e3fdfaec2a264c02_cryptolocker.exe
2524	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 856 wrote to memory of 2524	856	2024-03-25_f2cab6464f097950e3fdfaec2a264c02_cryptolocker.exe	28
PID 856 wrote to memory of 2524	856	2024-03-25_f2cab6464f097950e3fdfaec2a264c02_cryptolocker.exe	28
PID 856 wrote to memory of 2524	856	2024-03-25_f2cab6464f097950e3fdfaec2a264c02_cryptolocker.exe	28
PID 856 wrote to memory of 2524	856	2024-03-25_f2cab6464f097950e3fdfaec2a264c02_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-25_f2cab6464f097950e3fdfaec2a264c02_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-25_f2cab6464f097950e3fdfaec2a264c02_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:856
- 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:2524

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\retln.exe

Filesize
29KB

MD5
a70ee5567e931f51be4a102db117c140

SHA1
0c238137264b0fd8047bd7255cf99fe02f76336a

SHA256
83325385a9f3d3ebafbcb582664995379af50df95edf476b2e9760a4655830fc

SHA512
9d6f182cf163a1b55c0d0a79d6ab68dbbe87514d26ab99f3d2a2bccd5fb29ca8c2e8b5967320e27ab83131e83e3a3f2d65da60c8f3c93dfc725ad7d92a080c3d

Download Submit
memory/856-0-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/856-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/856-1-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/2524-18-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download