9f05e8d255ac1f37a6e18d6384240b8ef417f948814c36833a2197bcfdb53727

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
28/01/2024, 12:54

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-01-28_fa01a96ce988accbada8a52e161e61f5_cryptolocker.exe
Size

86KB
MD5

fa01a96ce988accbada8a52e161e61f5
SHA1

8fcbd42189eff6e81be87b11f6e83d70c63cab8c
SHA256

9f05e8d255ac1f37a6e18d6384240b8ef417f948814c36833a2197bcfdb53727
SHA512

5203aec46813c11e407f943e5ff718ca61c6804d6706593d70173596dbb30ca2efcd724bd55ee85de1e21e91926d69106aea5cfa7acacfa8abb6becfe9f95d7e
SSDEEP

768:qkmnjFom/kLyMro2GtOOtEvwDpjeY10Y/YMsvlMdwPK80GQuchoIgtIq:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgh

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2868-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a0000000133a9-11.dat	CryptoLocker_rule2
behavioral1/memory/2868-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3048-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3048-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2868-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000a0000000133a9-11.dat	CryptoLocker_set1
behavioral1/memory/2868-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3048-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3048-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2868-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x000a0000000133a9-11.dat	UPX
behavioral1/memory/2868-15-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/3048-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/3048-26-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
3048	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2868	2024-01-28_fa01a96ce988accbada8a52e161e61f5_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2868-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000a0000000133a9-11.dat	upx
behavioral1/memory/2868-15-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/3048-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/3048-26-0x0000000000500000-0x000000000050F000-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 2868 wrote to memory of 3048	2868	2024-01-28_fa01a96ce988accbada8a52e161e61f5_cryptolocker.exe	28
PID 2868 wrote to memory of 3048	2868	2024-01-28_fa01a96ce988accbada8a52e161e61f5_cryptolocker.exe	28
PID 2868 wrote to memory of 3048	2868	2024-01-28_fa01a96ce988accbada8a52e161e61f5_cryptolocker.exe	28
PID 2868 wrote to memory of 3048	2868	2024-01-28_fa01a96ce988accbada8a52e161e61f5_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-28_fa01a96ce988accbada8a52e161e61f5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-28_fa01a96ce988accbada8a52e161e61f5_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2868
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3048

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
86KB

MD5
7c63c864b3868615a98c436e98a842b7

SHA1
92bff75a32e9edfdc7909904edec44989368312b

SHA256
a7d39cfff3ef4b0ea8ef004b260b402cd7851e9c369b6491c4123736b6fde20e

SHA512
e991e33dda3e833ddc1bb0ef82771cece9c756a98593f563b9c058bcdc43fb5abbfc2646eaf37e8f3a0a0182641178515e652f4496fd9312feaa183d07b8dc53

Download Submit
memory/2868-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2868-1-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/2868-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2868-8-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/2868-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3048-18-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/3048-20-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/3048-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3048-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download