b2c1109d34d7675149669cb97ff953577809a31b9a2e652aad754c31938576a2

Analysis

max time kernel
149s
max time network
151s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
17/06/2024, 07:32 UTC

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General

Target

2024-06-17_7b88e03276361c117d0fa9ba5733025d_cryptolocker.exe
Size

42KB
MD5

7b88e03276361c117d0fa9ba5733025d
SHA1

f453e4e9c50f768ea6227d81170344cf922ff808
SHA256

b2c1109d34d7675149669cb97ff953577809a31b9a2e652aad754c31938576a2
SHA512

a2a5d0119fe94a39b67e1d0399f42ec67e5540c6b589926b170159ae9995ded663d55101e44b9acb7b4fca488f1fd2c5b2933e027d9b5d37bb6239474e5d1ea5
SSDEEP

768:ba74zYcgT/EkdCQgpwXFXSqQXfj0xKoWv:ba6YcA/Xk3wXFXSqAJb

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/112-0-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d000000012346-11.dat	CryptoLocker_rule2
behavioral1/memory/112-15-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1580-16-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1580-26-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/112-0-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral1/files/0x000d000000012346-11.dat	UPX
behavioral1/memory/112-15-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral1/memory/1580-16-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral1/memory/1580-26-0x0000000008000000-0x000000000800F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
1580	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
112	2024-06-17_7b88e03276361c117d0fa9ba5733025d_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/112-0-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/files/0x000d000000012346-11.dat	upx
behavioral1/memory/112-15-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/memory/1580-16-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/memory/1580-26-0x0000000008000000-0x000000000800F000-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 112 wrote to memory of 1580	112	2024-06-17_7b88e03276361c117d0fa9ba5733025d_cryptolocker.exe	28
PID 112 wrote to memory of 1580	112	2024-06-17_7b88e03276361c117d0fa9ba5733025d_cryptolocker.exe	28
PID 112 wrote to memory of 1580	112	2024-06-17_7b88e03276361c117d0fa9ba5733025d_cryptolocker.exe	28
PID 112 wrote to memory of 1580	112	2024-06-17_7b88e03276361c117d0fa9ba5733025d_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-17_7b88e03276361c117d0fa9ba5733025d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-17_7b88e03276361c117d0fa9ba5733025d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:112
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1580

Network

DNS

mytarta.com

hasfj.exe

Remote address:

8.8.8.8:53

Request

mytarta.com

IN A

Response

No results found

8.8.8.8:53

mytarta.com

dns

hasfj.exe

57 B
130 B
1
1

DNS Request

mytarta.com

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\hasfj.exe

Filesize
42KB

MD5
8dd1728a343985645c4bc04f40a016e9

SHA1
e857139bbf73ec91b38e065508764e678b4ff341

SHA256
4d020e156c94e6caf5d5b0f6786b3661f6377b794a8c647503d294ee5cac1d3a

SHA512
70ec36ec2749e421dcf58ff029e4e767a1f764bce5d7024e9c11eab2453a8b1800924e673e38390b6f82f0ad973889cc83f0a1ac6a1fa6c98df21ab53ee2a5db

Download Submit
memory/112-0-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/112-9-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/112-2-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/112-1-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/112-15-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/1580-16-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/1580-18-0x0000000001CF0000-0x0000000001CF6000-memory.dmp

Filesize
24KB

Download
memory/1580-25-0x0000000001CE0000-0x0000000001CE6000-memory.dmp

Filesize
24KB

Download
memory/1580-26-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download