b44ebe2e39ab6b6d31f52313e267705dc0206a4e2f959f6464103fcf3f70727b

Analysis

max time kernel
149s
max time network
149s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
05/07/2024, 18:51

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General

Target

2024-07-05_40ef6c83eccb460b89f57b837b4afcbd_cryptolocker.exe
Size

53KB
MD5

40ef6c83eccb460b89f57b837b4afcbd
SHA1

cbfc7ed14c7aabb6b46b054d957282b7dd243869
SHA256

b44ebe2e39ab6b6d31f52313e267705dc0206a4e2f959f6464103fcf3f70727b
SHA512

20e4ce27370ce0b9be6f184558cd25ba619f86f2b1bffed47c03c662987bb88222d0248729d7dcb83ffc80c8af598b247cab9216a59b619b2011d9069a402db5
SSDEEP

768:bODOw9UiamWUB2preAr+OfjH/0S16avdrQFiLjJvtO6:bODOw9acifAoc+v9

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3020	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
1728	2024-07-05_40ef6c83eccb460b89f57b837b4afcbd_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1728-0-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/files/0x000c000000015cd2-11.dat	upx
behavioral1/memory/1728-15-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/memory/3020-16-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/memory/3020-26-0x0000000008000000-0x000000000800F000-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 1728 wrote to memory of 3020	1728	2024-07-05_40ef6c83eccb460b89f57b837b4afcbd_cryptolocker.exe	29
PID 1728 wrote to memory of 3020	1728	2024-07-05_40ef6c83eccb460b89f57b837b4afcbd_cryptolocker.exe	29
PID 1728 wrote to memory of 3020	1728	2024-07-05_40ef6c83eccb460b89f57b837b4afcbd_cryptolocker.exe	29
PID 1728 wrote to memory of 3020	1728	2024-07-05_40ef6c83eccb460b89f57b837b4afcbd_cryptolocker.exe	29

C:\Users\Admin\AppData\Local\Temp\2024-07-05_40ef6c83eccb460b89f57b837b4afcbd_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-07-05_40ef6c83eccb460b89f57b837b4afcbd_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1728
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:3020

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
53KB

MD5
94862b95df9da70f007bc848c77b3465

SHA1
89da6ad123ead6da14de96b8232361fb214b1ac7

SHA256
e96ecf7d318c645baf25ec15d127d80f07ae92a0dfeb4cf178bc4fddabb32ef2

SHA512
7c96a8a206bcaea31d6b28a873317283c6583def9a269d5f80e7f9bae914c28b98936b5e387a348e36b1165a961b7506320842f21885abb3dab4ad6a290c02f3

Download Submit
memory/1728-0-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/1728-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1728-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1728-3-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/1728-15-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/3020-16-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/3020-18-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/3020-19-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/3020-26-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download