8df3e74b11a27f366f036b98decc82ca96f090526f7afbd03f912cb2f9445d18

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
13/02/2024, 10:49

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-02-13_f2eee3af0f50eb427ca48a78efc2b1c1_cryptolocker.exe
Size

93KB
MD5

f2eee3af0f50eb427ca48a78efc2b1c1
SHA1

80f97b1ea4546935207e210c11dbbc1147ea7473
SHA256

8df3e74b11a27f366f036b98decc82ca96f090526f7afbd03f912cb2f9445d18
SHA512

f3c64894e84167006d21af56ce22c9c56c43ae973df45188a382d897a0259f2bc626d3e992e1d7ea6da4d7a4fb2773ebcbe6b8032875f03c64f2f453843d76e2
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgpwbP:AnBdOOtEvwDpj6zH

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2164-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000012263-11.dat	CryptoLocker_rule2
behavioral1/memory/2164-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2700-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2700-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2164-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000a000000012263-11.dat	CryptoLocker_set1
behavioral1/memory/2164-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2700-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2700-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2164-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x000a000000012263-11.dat	UPX
behavioral1/memory/2164-15-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2700-16-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2700-26-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2700	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2164	2024-02-13_f2eee3af0f50eb427ca48a78efc2b1c1_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2164-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000a000000012263-11.dat	upx
behavioral1/memory/2164-15-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2700-16-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2700-26-0x0000000000500000-0x000000000050F000-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 2164 wrote to memory of 2700	2164	2024-02-13_f2eee3af0f50eb427ca48a78efc2b1c1_cryptolocker.exe	28
PID 2164 wrote to memory of 2700	2164	2024-02-13_f2eee3af0f50eb427ca48a78efc2b1c1_cryptolocker.exe	28
PID 2164 wrote to memory of 2700	2164	2024-02-13_f2eee3af0f50eb427ca48a78efc2b1c1_cryptolocker.exe	28
PID 2164 wrote to memory of 2700	2164	2024-02-13_f2eee3af0f50eb427ca48a78efc2b1c1_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-13_f2eee3af0f50eb427ca48a78efc2b1c1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-13_f2eee3af0f50eb427ca48a78efc2b1c1_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2164
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2700

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\asih.exe

Filesize
93KB

MD5
86bb4e2ea1fb3d89864eaaa7c23406f6

SHA1
607afb179c384d43fe4b7df2614a70457df590a6

SHA256
2a6bf9df5577368eea54c9314c76e9537b6100399f70c0efb92e2a1218be3ef0

SHA512
affb1bf94956da61b8433bdd09db2a2ee828e6e79f42712f7ade118d632bdf8f40ce179126d76c06c2bbaadddde048e76dde67908202f48730695a6973c6382a

Download Submit
memory/2164-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2164-1-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2164-3-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2164-2-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2164-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2700-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2700-18-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2700-19-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2700-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download