0f92edfc17447c93332341e73826440d43a6aab8307eb433ab9e8fdf7c1cb6eb

Analysis

max time kernel
149s
max time network
151s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
10/05/2024, 05:34

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General

Target

2024-05-10_b2974882cfa3ae634e976e66ea1b142a_cryptolocker.exe
Size

50KB
MD5

b2974882cfa3ae634e976e66ea1b142a
SHA1

6ac7ef0a65bf04faed7993b5306767789e5552d8
SHA256

0f92edfc17447c93332341e73826440d43a6aab8307eb433ab9e8fdf7c1cb6eb
SHA512

5040ffbe300368710c56bbb9530acdb938c5a8e65a811301599f8c23f644b6823009c0fa47eef5c03a1d92b6967913c127487cbb98f35ae12bee5420cfb67491
SSDEEP

768:bODOw9UiamWUB2preAr+OfjH/0S16avdrQFiLjJvtXY:bODOw9acifAoc+vXY

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2808-0-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000015ca5-11.dat	CryptoLocker_rule2
behavioral1/memory/2808-15-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3040-25-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2808-0-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral1/files/0x000b000000015ca5-11.dat	UPX
behavioral1/memory/2808-15-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral1/memory/3040-25-0x0000000008000000-0x000000000800F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
3040	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
2808	2024-05-10_b2974882cfa3ae634e976e66ea1b142a_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2808-0-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/files/0x000b000000015ca5-11.dat	upx
behavioral1/memory/2808-15-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/memory/3040-25-0x0000000008000000-0x000000000800F000-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 2808 wrote to memory of 3040	2808	2024-05-10_b2974882cfa3ae634e976e66ea1b142a_cryptolocker.exe	28
PID 2808 wrote to memory of 3040	2808	2024-05-10_b2974882cfa3ae634e976e66ea1b142a_cryptolocker.exe	28
PID 2808 wrote to memory of 3040	2808	2024-05-10_b2974882cfa3ae634e976e66ea1b142a_cryptolocker.exe	28
PID 2808 wrote to memory of 3040	2808	2024-05-10_b2974882cfa3ae634e976e66ea1b142a_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-10_b2974882cfa3ae634e976e66ea1b142a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-10_b2974882cfa3ae634e976e66ea1b142a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2808
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:3040

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\lossy.exe

Filesize
51KB

MD5
b30e444b4d61f67cfecaae426413d254

SHA1
0eb1e2e79665a641afb6486deb67dc556127e054

SHA256
977ec5074082ddf550b02c0477125a2bde4eeeeaca2b765870e023dfef42de55

SHA512
02e1aa66b32e883f7673d861a6b03e5ee5820623201c3e41d991bc34c60b7297a87b1759bf08d66a775a9f12885b35078ab244ab55cfc7753c8de3c9957d8b9f

Download Submit
memory/2808-0-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2808-1-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2808-9-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2808-2-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2808-15-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/3040-25-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/3040-24-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/3040-17-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download