b37207d66199910e160d422735c4008ba678c83ca20f878be9ba26580ef2e575

Analysis

max time kernel
147s
max time network
148s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
29/05/2024, 06:55

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General

Target

2024-05-29_d120b3bef824d561681cc6e0e3d52e64_cryptolocker.exe
Size

97KB
MD5

d120b3bef824d561681cc6e0e3d52e64
SHA1

227644ff2fa8a056771e35f75e037412d0ac9e86
SHA256

b37207d66199910e160d422735c4008ba678c83ca20f878be9ba26580ef2e575
SHA512

d5d6a929c3a7df237b68d22e9ac2dd09aa8ea10f5556942113d6c15d659dcd4162bde5cb9369b55f608cf43fe79572b1a52c532d461212c7616e465a9b8c27c7
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp01EG:AnBdOOtEvwDpj6zZ

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1180-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d00000001228a-11.dat	CryptoLocker_rule2
behavioral1/memory/1180-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1836-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1836-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1180-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000d00000001228a-11.dat	CryptoLocker_set1
behavioral1/memory/1180-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1836-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1836-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1180-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x000d00000001228a-11.dat	UPX
behavioral1/memory/1180-16-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/1836-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/1836-27-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
1836	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1180	2024-05-29_d120b3bef824d561681cc6e0e3d52e64_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1180-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000d00000001228a-11.dat	upx
behavioral1/memory/1180-16-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/1836-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/1836-27-0x0000000000500000-0x000000000050F000-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 1180 wrote to memory of 1836	1180	2024-05-29_d120b3bef824d561681cc6e0e3d52e64_cryptolocker.exe	28
PID 1180 wrote to memory of 1836	1180	2024-05-29_d120b3bef824d561681cc6e0e3d52e64_cryptolocker.exe	28
PID 1180 wrote to memory of 1836	1180	2024-05-29_d120b3bef824d561681cc6e0e3d52e64_cryptolocker.exe	28
PID 1180 wrote to memory of 1836	1180	2024-05-29_d120b3bef824d561681cc6e0e3d52e64_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-29_d120b3bef824d561681cc6e0e3d52e64_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-29_d120b3bef824d561681cc6e0e3d52e64_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1180
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1836

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\asih.exe

Filesize
97KB

MD5
84aaab65b905dc8bca07d9ce0fd097e9

SHA1
1947216ee60b6a266ac71950d8411aaefc183b1f

SHA256
c7b6e2b6e54ef3fe6be7abe22285161083efdecf1845ccb15ea0bd53dd824d1d

SHA512
d511d3e75becea135fe642894a5ae86ae1cde8c3c75c4700200a470c73fec0f71f9c405be082dc68c017d6835a37a54afca99c0610b882bbfe7bff03d0d66f25

Download Submit
memory/1180-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1180-1-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/1180-2-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/1180-9-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/1180-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1836-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1836-26-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1836-19-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/1836-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download