8288147a339b64d93bc0eee11b9c109f6a72a2e2e1e432de592c7c85e552934f

Analysis

max time kernel
148s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
13/03/2024, 08:37

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General

Target

2024-03-13_8e120f4431a4a5abd003815f78efd521_cryptolocker.exe
Size

100KB
MD5

8e120f4431a4a5abd003815f78efd521
SHA1

7c419de5e2656d789ee9ae5b0d981cd67ad9682a
SHA256

8288147a339b64d93bc0eee11b9c109f6a72a2e2e1e432de592c7c85e552934f
SHA512

806a467f3a50ca713c92f7fce73b967811468027d9a82303a4d198ece95dc73c327e3741efd8627783a0918483fec15f3894c211c3d2db1fa7ccc3a948296eb9
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgpwqWsviPeBO:AnBdOOtEvwDpj6z9

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/640-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c00000001224c-11.dat	CryptoLocker_rule2
behavioral1/memory/640-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1720-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1720-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/640-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c00000001224c-11.dat	CryptoLocker_set1
behavioral1/memory/640-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1720-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1720-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/640-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x000c00000001224c-11.dat	UPX
behavioral1/memory/640-15-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/1720-16-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/1720-26-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
1720	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
640	2024-03-13_8e120f4431a4a5abd003815f78efd521_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/640-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000c00000001224c-11.dat	upx
behavioral1/memory/640-15-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/1720-16-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/1720-26-0x0000000000500000-0x000000000050F000-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 640 wrote to memory of 1720	640	2024-03-13_8e120f4431a4a5abd003815f78efd521_cryptolocker.exe	28
PID 640 wrote to memory of 1720	640	2024-03-13_8e120f4431a4a5abd003815f78efd521_cryptolocker.exe	28
PID 640 wrote to memory of 1720	640	2024-03-13_8e120f4431a4a5abd003815f78efd521_cryptolocker.exe	28
PID 640 wrote to memory of 1720	640	2024-03-13_8e120f4431a4a5abd003815f78efd521_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-13_8e120f4431a4a5abd003815f78efd521_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-13_8e120f4431a4a5abd003815f78efd521_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:640
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1720

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

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Downloads

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

Filesize
100KB

MD5
86fd6dcd9725923795fffb2964e1c798

SHA1
9025a2a33423f79abb489dac5613525445b7fbc9

SHA256
6d76f96e930e25fbc9e79ceb7e8320323b3dfbf8c4b77fee03b480bd3f22fcae

SHA512
fcd3307fb53a81edf20dbb234fe7bde894e57a0c22c4c22c287aaff0d1b4763ee1d8fca7541f16d0ec6a45c8cc5da2207bc5ee29e072271d24838535c054c2ab

Download Submit
memory/640-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/640-1-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/640-4-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/640-2-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/640-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1720-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1720-19-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1720-18-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/1720-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download