e4d26b2ab01b98e470f0c07694e6ff034980b0f5b63844e240b773aaca3d0110

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
25/05/2024, 06:38

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General

Target

2024-05-25_7a0a67346a3145b756e1248ce39722c6_cryptolocker.exe
Size

66KB
MD5

7a0a67346a3145b756e1248ce39722c6
SHA1

70ce2b0a6ca51b135581ad79e9b53323b61b22d3
SHA256

e4d26b2ab01b98e470f0c07694e6ff034980b0f5b63844e240b773aaca3d0110
SHA512

b2b556e54f94472573eb7e22ed7d99de8d7730f259da0507a842d12f6da42e94e0d6ca6fcf419a91ecf36158f1e974b02da1e1887a20acf621edb1979617f848
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjYZ8xDyfz:1nK6a+qdOOtEvwDpjg

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/3016-1-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0009000000015c23-11.dat	CryptoLocker_rule2
behavioral1/memory/3016-14-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1612-16-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1612-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/3016-1-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/files/0x0009000000015c23-11.dat	CryptoLocker_set1
behavioral1/memory/3016-14-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/memory/1612-16-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/memory/1612-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/3016-1-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/files/0x0009000000015c23-11.dat	UPX
behavioral1/memory/3016-14-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/memory/1612-16-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/memory/1612-26-0x0000000000500000-0x000000000050F311-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
1612	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
3016	2024-05-25_7a0a67346a3145b756e1248ce39722c6_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/3016-1-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x0009000000015c23-11.dat	upx
behavioral1/memory/3016-14-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/1612-16-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/1612-26-0x0000000000500000-0x000000000050F311-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 3016 wrote to memory of 1612	3016	2024-05-25_7a0a67346a3145b756e1248ce39722c6_cryptolocker.exe	28
PID 3016 wrote to memory of 1612	3016	2024-05-25_7a0a67346a3145b756e1248ce39722c6_cryptolocker.exe	28
PID 3016 wrote to memory of 1612	3016	2024-05-25_7a0a67346a3145b756e1248ce39722c6_cryptolocker.exe	28
PID 3016 wrote to memory of 1612	3016	2024-05-25_7a0a67346a3145b756e1248ce39722c6_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-25_7a0a67346a3145b756e1248ce39722c6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-25_7a0a67346a3145b756e1248ce39722c6_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3016
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1612

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
67KB

MD5
d3d42068dbe3245b0f62faadefc7da85

SHA1
1784e751c67363b8030a84c6f9708b18d33001f1

SHA256
ffd3cf0c332b4ff940306a3f2953672c582b8fdf1d0a4c50b6b51e7574deb1c2

SHA512
c7c9c4d12798c328cba54bee1baba3ee53af025a76ade96d8b9399f4c7b01179c7f38a437375fd82b6efce2fc03ef6ad3047ed7c18f0cb3b9fbf0dc53d5988be

Download Submit
memory/1612-18-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/1612-25-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/1612-16-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/1612-26-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/3016-1-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/3016-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/3016-9-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/3016-2-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/3016-14-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download