e1f7cb1103cc89d96acaa8dc1a10ad1d9e0b9978399949a3027ef4dc7ae667f5

Analysis

max time kernel
148s
max time network
154s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
23/05/2024, 14:59

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General

Target

2024-05-23_b3ac5f80f570705f61928e57f7d6b867_cryptolocker.exe
Size

390KB
MD5

b3ac5f80f570705f61928e57f7d6b867
SHA1

b46532af0c552617fbd9c74d9f7c73c672c2ad6e
SHA256

e1f7cb1103cc89d96acaa8dc1a10ad1d9e0b9978399949a3027ef4dc7ae667f5
SHA512

7da5105c3322a7d82b0471366d3bae505ca671e5e5a516f976177d8437e99ad5d1a512a82b3f8d25bc3c5382b4a18ac94e2e7c345d62118774a2bf0836c63a95
SSDEEP

6144:nnOsaQgAOjvrZFODJjBz3j1jTqQy6v2GGnugOtihzXc:nnOflT/ZFIjBz3xjTxynGUOUhXc

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a00000001466c-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2300	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
1136	2024-05-23_b3ac5f80f570705f61928e57f7d6b867_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 1136 wrote to memory of 2300	1136	2024-05-23_b3ac5f80f570705f61928e57f7d6b867_cryptolocker.exe	28
PID 1136 wrote to memory of 2300	1136	2024-05-23_b3ac5f80f570705f61928e57f7d6b867_cryptolocker.exe	28
PID 1136 wrote to memory of 2300	1136	2024-05-23_b3ac5f80f570705f61928e57f7d6b867_cryptolocker.exe	28
PID 1136 wrote to memory of 2300	1136	2024-05-23_b3ac5f80f570705f61928e57f7d6b867_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-23_b3ac5f80f570705f61928e57f7d6b867_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_b3ac5f80f570705f61928e57f7d6b867_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1136
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2300

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
390KB

MD5
ac902d9a91a98fe6727a0d456e16277c

SHA1
3731af2a00aa5b0cff55123ba3ea344801170939

SHA256
90f19ab3334b9d984fb9f3f57e06f76d71964be52e5947a8f12871cfa1ee5be2

SHA512
b15ab9cb3f4704fcac37d5041337a18bafdb70f62821b0a531b582bb6a2257cfcdbe24053906ae4ed3a82930220c68c496b64a592345f8af9e26cc92da4e83dc

Download Submit
memory/1136-0-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/1136-1-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/1136-8-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/2300-15-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/2300-22-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download