d2771c975f7477fce33e8d2090dd599aa5f60d0f2c2baf17789aafa61a1b46b7

Analysis

max time kernel
147s
max time network
148s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
11-06-2024 09:29

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General

Target

2024-06-11_d2a6b2e74c3fd3975c0e209eb265418d_cryptolocker.exe
Size

74KB
MD5

d2a6b2e74c3fd3975c0e209eb265418d
SHA1

985c37c1ce4d3fc15c6e56619a4083566dc2aa58
SHA256

d2771c975f7477fce33e8d2090dd599aa5f60d0f2c2baf17789aafa61a1b46b7
SHA512

3f42cd3ff9c504c10ffe3be5c6d37e18d1f9af918b73788c738d760f2fc659ce48ef48e3bfa9f4f4849571b653b0870c613f817a5a43b0bdc5bfc6d442485653
SSDEEP

768:u6LsoEEeegiZPvEhHSG+gZgtOOtEvwDpjeY10Y/YMsP3:u6QFElP6n+gWMOtEvwDpjJGYQb/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000013413-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000013413-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2964	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1940	2024-06-11_d2a6b2e74c3fd3975c0e209eb265418d_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 1940 wrote to memory of 2964	1940	2024-06-11_d2a6b2e74c3fd3975c0e209eb265418d_cryptolocker.exe	28
PID 1940 wrote to memory of 2964	1940	2024-06-11_d2a6b2e74c3fd3975c0e209eb265418d_cryptolocker.exe	28
PID 1940 wrote to memory of 2964	1940	2024-06-11_d2a6b2e74c3fd3975c0e209eb265418d_cryptolocker.exe	28
PID 1940 wrote to memory of 2964	1940	2024-06-11_d2a6b2e74c3fd3975c0e209eb265418d_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-11_d2a6b2e74c3fd3975c0e209eb265418d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-11_d2a6b2e74c3fd3975c0e209eb265418d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1940
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2964

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
74KB

MD5
5755e65d9d561a8794e766ab3f94dab8

SHA1
90c831fb5f2be76a16217258b91bf7bd36b7fece

SHA256
6d7f61d0a30dd244ee3e790ccc6d0575560578d34f3d1b21a45285e19d4ec465

SHA512
dee5d8f898fda54bdf3299273130c9b7235551d53d2da1c01f9170476c8306d9a5dbc1354d72bb312666ea4a09ddbdc8d3cb83e0380c9baf41e441c990088b73

Download Submit
memory/1940-0-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1940-1-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/1940-8-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2964-15-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2964-22-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download