4d02b93768a5644902b42ed87a4e67d24c80e69aa346f28c6652508c5001a665

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
31-10-2024 08:28

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General

Target

2024-10-31_9285980155582b2f4901448df7cd6606_cryptolocker.exe
Size

94KB
MD5

9285980155582b2f4901448df7cd6606
SHA1

95a03f624b13990038a953c89838638ea6b0eb68
SHA256

4d02b93768a5644902b42ed87a4e67d24c80e69aa346f28c6652508c5001a665
SHA512

8c6c8e5351309282c5a39504cebadf0723164e2b902b6843e1db4601db779737ba6490b2a2515c2336685b818e61222c22cb2a6c67f78a23600fa7632a5cb8c1
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjuv5F:zCsanOtEvwDpjD

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2804	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2876	2024-10-31_9285980155582b2f4901448df7cd6606_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2876-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x00090000000120f6-11.dat	upx
behavioral1/memory/2804-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2876-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2804-26-0x0000000000500000-0x0000000000510000-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	2024-10-31_9285980155582b2f4901448df7cd6606_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 2876 wrote to memory of 2804	2876	2024-10-31_9285980155582b2f4901448df7cd6606_cryptolocker.exe	30
PID 2876 wrote to memory of 2804	2876	2024-10-31_9285980155582b2f4901448df7cd6606_cryptolocker.exe	30
PID 2876 wrote to memory of 2804	2876	2024-10-31_9285980155582b2f4901448df7cd6606_cryptolocker.exe	30
PID 2876 wrote to memory of 2804	2876	2024-10-31_9285980155582b2f4901448df7cd6606_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-10-31_9285980155582b2f4901448df7cd6606_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-31_9285980155582b2f4901448df7cd6606_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2876
- 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:2804

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
95KB

MD5
cb1a15fd7c68a9f8c67d0969a3553dd0

SHA1
8017dd240571e08567be1edfb57d132d25067127

SHA256
013e214a76eaa5b3d84910af02819178697ef6579fd1a6de62f0ece0b6987bf9

SHA512
ccd956d8492154791675eae2e25d0cb53b8b869d18cf11330457ff250c12a2c31bd5f863db1a1d2e022d4eab1d861bb40af2d2f61341cb1a9a36777b643c94d9

Download Submit
memory/2804-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2804-18-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2804-25-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2804-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2876-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2876-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2876-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2876-3-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2876-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download