bf74708843e15c88a21c089c19d3fb94330cf6aa309a7ddcb425027d0e314850

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20240319-en
resource tags

arch:x64arch:x86image:win7-20240319-enlocale:en-usos:windows7-x64system
submitted
26-03-2024 19:47

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General

Target

2024-03-26_c0aea71180786b377a6ec463b42bc047_cryptolocker.exe
Size

43KB
MD5

c0aea71180786b377a6ec463b42bc047
SHA1

d0842dcef86e424f5c71fc8e7c1766bbfedac11e
SHA256

bf74708843e15c88a21c089c19d3fb94330cf6aa309a7ddcb425027d0e314850
SHA512

0369ad013b6b4865d6cc6c3ca28c916d46ad65cd81c55921cf867a79ba5c994a1243cf2bf12d0f38a59e8dab774bc6c6c70208b1e9ab6f8e8c9dbab7d765d659
SSDEEP

768:bgX4zYcgTEu6QOaryfjqDDw3sCu5b+syQNSDj:bgGYcA/53GADw8Cl/l

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b0000000121cc-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2340	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
544	2024-03-26_c0aea71180786b377a6ec463b42bc047_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 544 wrote to memory of 2340	544	2024-03-26_c0aea71180786b377a6ec463b42bc047_cryptolocker.exe	28
PID 544 wrote to memory of 2340	544	2024-03-26_c0aea71180786b377a6ec463b42bc047_cryptolocker.exe	28
PID 544 wrote to memory of 2340	544	2024-03-26_c0aea71180786b377a6ec463b42bc047_cryptolocker.exe	28
PID 544 wrote to memory of 2340	544	2024-03-26_c0aea71180786b377a6ec463b42bc047_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-26_c0aea71180786b377a6ec463b42bc047_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-26_c0aea71180786b377a6ec463b42bc047_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:544
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2340

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
d762483545e2352a625689a286d69fa1

SHA1
dffd1c03567d45bcb82a38fcf7f1803e4fac0f77

SHA256
d4981c3a074b98c600816321f7ec57c4006f161670a619008253ba5e80ccaa43

SHA512
86438bff988b1c19039c78dc98c62c961fdbf87717dd0176d30c4b4065211d41434b992f454a617621a101e2e1f6f01f2ba26deb54b7e7b63554eb7730185467

Download Submit
memory/544-0-0x0000000001CC0000-0x0000000001CC6000-memory.dmp

Filesize
24KB

Download
memory/544-1-0x0000000001CC0000-0x0000000001CC6000-memory.dmp

Filesize
24KB

Download
memory/544-2-0x0000000001CE0000-0x0000000001CE6000-memory.dmp

Filesize
24KB

Download
memory/2340-15-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/2340-17-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download