a4d559a5fa44e52ca7eaadb27c1a9b2dbf06169b54da65e58e975f1ea56591a9

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
21/09/2024, 03:28

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General

Target

2024-09-21_3ff79ca48313c0d0fdfd91505869f240_cryptolocker.exe
Size

96KB
MD5

3ff79ca48313c0d0fdfd91505869f240
SHA1

cdcc63d7d0b8534467e46e1bf1a5ae10aa21b744
SHA256

a4d559a5fa44e52ca7eaadb27c1a9b2dbf06169b54da65e58e975f1ea56591a9
SHA512

735f8d227c14ebd77db83d9c82c0c22aa231e8584b1c3953351f9a2679401ffc3221a4ec9ee0178dd7cd197e67adc95252eaa6ed3eeeb0583ab99837129fbd9c
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjgx/kOg:zCsanOtEvwDpjBa

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1992	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2888	2024-09-21_3ff79ca48313c0d0fdfd91505869f240_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2888-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000b0000000122cf-11.dat	upx
behavioral1/memory/1992-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2888-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1992-26-0x0000000000500000-0x0000000000510000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-21_3ff79ca48313c0d0fdfd91505869f240_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	misid.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2888 wrote to memory of 1992	2888	2024-09-21_3ff79ca48313c0d0fdfd91505869f240_cryptolocker.exe	30
PID 2888 wrote to memory of 1992	2888	2024-09-21_3ff79ca48313c0d0fdfd91505869f240_cryptolocker.exe	30
PID 2888 wrote to memory of 1992	2888	2024-09-21_3ff79ca48313c0d0fdfd91505869f240_cryptolocker.exe	30
PID 2888 wrote to memory of 1992	2888	2024-09-21_3ff79ca48313c0d0fdfd91505869f240_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-09-21_3ff79ca48313c0d0fdfd91505869f240_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-21_3ff79ca48313c0d0fdfd91505869f240_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2888
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1992

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
96KB

MD5
0ca4817c8ea798a93fe427ee2a2567a4

SHA1
ab3bc8474a3fa808de61c9b18dba5a8ed8af736b

SHA256
55bb8f51235b293f18bb7a2d1159ad6aefded7d841341443113cfc05d6fe5b9d

SHA512
94ed1b8c7194c0d29f3390214168dc59d3b3e35e27e7cca9b947f83c5910b4b1c00f3c8c672ee4a9297a6ddc3a08b7e74eaad7acf627ca0d7e90faef5744ae00

Download Submit
memory/1992-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1992-18-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/1992-25-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/1992-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2888-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2888-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2888-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2888-3-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2888-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download