fe6be6fc37671bdb48cfd9a7cdb61c4b6edebc870d15513191a9e1d0bdc6437f

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
08-05-2024 04:37

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General

Target

2024-05-08_62506e5dda12384d4813184c2018f32e_cryptolocker.exe
Size

43KB
MD5

62506e5dda12384d4813184c2018f32e
SHA1

6cd66c13449d06268df33e0c716d1a7dfec156a2
SHA256

fe6be6fc37671bdb48cfd9a7cdb61c4b6edebc870d15513191a9e1d0bdc6437f
SHA512

3f09e826f8dcdd8864531f76699d885d9a16027cc67f6e21b6046f914005ddb9e708e0f323268c35bcb90b543f80e7451a0a9bee84439b79ddd11d003be81dd4
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jb0nrlwfjDUadQA:bm74zYcgT/EkM0ryfjPdQA

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2776-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d000000015ccd-11.dat	CryptoLocker_rule2
behavioral1/memory/2776-14-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2492-16-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2492-26-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2492	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2776	2024-05-08_62506e5dda12384d4813184c2018f32e_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 2776 wrote to memory of 2492	2776	2024-05-08_62506e5dda12384d4813184c2018f32e_cryptolocker.exe	28
PID 2776 wrote to memory of 2492	2776	2024-05-08_62506e5dda12384d4813184c2018f32e_cryptolocker.exe	28
PID 2776 wrote to memory of 2492	2776	2024-05-08_62506e5dda12384d4813184c2018f32e_cryptolocker.exe	28
PID 2776 wrote to memory of 2492	2776	2024-05-08_62506e5dda12384d4813184c2018f32e_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-08_62506e5dda12384d4813184c2018f32e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-08_62506e5dda12384d4813184c2018f32e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2776
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2492

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\hasfj.exe

Filesize
43KB

MD5
1fa49aef8f56e968d13c9d588423d1b5

SHA1
9aee2b9656cc0ac1adde978d3f83d1646e402a70

SHA256
048da580cc1d783ba1ca0d75325da58ee0a0b0194d3fa414d5d51c4a1b323e68

SHA512
acd34f701d35a19dd75ef51a27e89d3406f365486fe545a269021a270c63527f1e5daa371f97b4388a4378e9670a2d9d19aa93c5c01cfdc3013dfb5048e6fa14

Download Submit
memory/2492-16-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2492-18-0x0000000001CF0000-0x0000000001CF6000-memory.dmp

Filesize
24KB

Download
memory/2492-25-0x0000000001CE0000-0x0000000001CE6000-memory.dmp

Filesize
24KB

Download
memory/2492-26-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2776-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2776-1-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/2776-2-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2776-9-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/2776-14-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download