805862cb9cc5a86514e5e97149ba348722ed7323730c38e978a19666bdf9c39f

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
11/04/2024, 03:27

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General

Target

2024-04-11_1db0d0fa59aeac36b19830596e6cba6d_cryptolocker.exe
Size

84KB
MD5

1db0d0fa59aeac36b19830596e6cba6d
SHA1

8570a9edbfb5c04062b5ce4931cdc078e042f2a3
SHA256

805862cb9cc5a86514e5e97149ba348722ed7323730c38e978a19666bdf9c39f
SHA512

3dcc9c628b756c332b3ea6b058af16a207bc49470ba306244ef220eca46055a003b3d3dd16efbfccc892c2d7cf290b8c10b97d3eef669b4235c264e203ab1809
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOT7O:T6a+rdOOtEvwDpjN6

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral1/memory/2240-8-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c00000001233c-22.dat	CryptoLocker_rule2
behavioral1/memory/2940-24-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/2240-8-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c00000001233c-22.dat	CryptoLocker_set1
behavioral1/memory/2940-24-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 3 IoCs

resource	yara_rule
behavioral1/memory/2240-8-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c00000001233c-22.dat	UPX
behavioral1/memory/2940-24-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2940	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2240	2024-04-11_1db0d0fa59aeac36b19830596e6cba6d_cryptolocker.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2240-8-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c00000001233c-22.dat	upx
behavioral1/memory/2940-24-0x0000000000500000-0x0000000000510000-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 2240 wrote to memory of 2940	2240	2024-04-11_1db0d0fa59aeac36b19830596e6cba6d_cryptolocker.exe	28
PID 2240 wrote to memory of 2940	2240	2024-04-11_1db0d0fa59aeac36b19830596e6cba6d_cryptolocker.exe	28
PID 2240 wrote to memory of 2940	2240	2024-04-11_1db0d0fa59aeac36b19830596e6cba6d_cryptolocker.exe	28
PID 2240 wrote to memory of 2940	2240	2024-04-11_1db0d0fa59aeac36b19830596e6cba6d_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-11_1db0d0fa59aeac36b19830596e6cba6d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-11_1db0d0fa59aeac36b19830596e6cba6d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2240
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2940

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

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
84KB

MD5
07f668cac235ef8b3b900e09761a6e75

SHA1
d9e01127c0cdbb2e4656416f48a4330e2ab0c649

SHA256
20f510d4f6601889a11eb3a5096aece68a32bf70161501519389349e3e641eef

SHA512
a86de2b70ca8c649ff96c7314de67039992d08e9efb63bbc9226495a93a60e63b106b5d0cba19ce35e3f9f8c7a4b8501aeca67212327c6cb5638049708c3bd73

Download Submit
memory/2240-8-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2240-9-0x00000000001E0000-0x00000000001E6000-memory.dmp

Filesize
24KB

Download
memory/2240-1-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/2240-0-0x00000000001E0000-0x00000000001E6000-memory.dmp

Filesize
24KB

Download
memory/2940-23-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2940-24-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2940-16-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download