9b5a5fac19d1118b4bf92bd4ed8995232c6281d7fc584d71ceb4f79a97dca333

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
03-06-2024 03:40

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-06-03_55ebc920c1189369a2f1c6e85bda8c43_cryptolocker.exe
Size

42KB
MD5

55ebc920c1189369a2f1c6e85bda8c43
SHA1

b08664f5e32b92d556a187c7385c15f1981966de
SHA256

9b5a5fac19d1118b4bf92bd4ed8995232c6281d7fc584d71ceb4f79a97dca333
SHA512

abe8a5799a7bbbc1387b59ac3635ec7d04b55b002e4e3ef0210e711e2e40f55df18278fd30590c2fd2ce9e80921315901d71d847e3326ed03796a4b70a6d92d7
SSDEEP

768:ba74zYcgT/EkdCQgpwXFXSqQXfj0xKoMb:ba6YcA/Xk3wXFXSqAJ1

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/956-0-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000f000000012028-11.dat	CryptoLocker_rule2
behavioral1/memory/2080-16-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/956-15-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2080-26-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/956-0-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral1/files/0x000f000000012028-11.dat	UPX
behavioral1/memory/2080-16-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral1/memory/956-15-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral1/memory/2080-26-0x0000000008000000-0x000000000800F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2080	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
956	2024-06-03_55ebc920c1189369a2f1c6e85bda8c43_cryptolocker.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/956-0-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/files/0x000f000000012028-11.dat	upx
behavioral1/memory/2080-16-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/memory/956-15-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/memory/2080-26-0x0000000008000000-0x000000000800F000-memory.dmp	upx

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 956 wrote to memory of 2080	956	2024-06-03_55ebc920c1189369a2f1c6e85bda8c43_cryptolocker.exe	29
PID 956 wrote to memory of 2080	956	2024-06-03_55ebc920c1189369a2f1c6e85bda8c43_cryptolocker.exe	29
PID 956 wrote to memory of 2080	956	2024-06-03_55ebc920c1189369a2f1c6e85bda8c43_cryptolocker.exe	29
PID 956 wrote to memory of 2080	956	2024-06-03_55ebc920c1189369a2f1c6e85bda8c43_cryptolocker.exe	29

C:\Users\Admin\AppData\Local\Temp\2024-06-03_55ebc920c1189369a2f1c6e85bda8c43_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-03_55ebc920c1189369a2f1c6e85bda8c43_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:956
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2080

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

Loading Replay Monitor...

Downloads

\Users\Admin\AppData\Local\Temp\hasfj.exe

Filesize
42KB

MD5
f343ddb9cd423e0afa017f3ed566ad9e

SHA1
b403be678c553069e24bd36669a2320380ff7f10

SHA256
0df740e7b98965209ded4202163bb04fe0bf55b5298358f55a54800d35825ec1

SHA512
99218d95abaebc391f156aa5b4614146fa2d46e619fb9fec5879c9cc5a1a17926a23946984d40d7439a16ec339a88982fd1f2430b03b2aa2cd2473a65da1099f

Download Submit
memory/956-0-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/956-1-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/956-8-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/956-2-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/956-15-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2080-16-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2080-25-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2080-18-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2080-26-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download