8a27be8a61aef68303e07a4cc893bf64459ff02627aab33e248ad84d50f49007

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
08-08-2024 12:38

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General

Target

2024-08-08_c90ddbb406317775b15cb014c9017dcd_cryptolocker.exe
Size

82KB
MD5

c90ddbb406317775b15cb014c9017dcd
SHA1

dc07d89e79db4b4cd748e31ab09c0d4f906ef19f
SHA256

8a27be8a61aef68303e07a4cc893bf64459ff02627aab33e248ad84d50f49007
SHA512

38f52933b1ca0f40e11140c35f04da48c33c246cc120476dac4bed3f712641865a7044baf1ac6f374e1e9395b228068f506266ba76803ae6ea96ae508bc7013c
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1ky7QT:zCsanOtEvwDpjH

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1408	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2088	2024-08-08_c90ddbb406317775b15cb014c9017dcd_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2088-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c0000000170f2-11.dat	upx
behavioral1/memory/2088-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1408-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1408-26-0x0000000000500000-0x0000000000510000-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	misid.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-08-08_c90ddbb406317775b15cb014c9017dcd_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2088 wrote to memory of 1408	2088	2024-08-08_c90ddbb406317775b15cb014c9017dcd_cryptolocker.exe	31
PID 2088 wrote to memory of 1408	2088	2024-08-08_c90ddbb406317775b15cb014c9017dcd_cryptolocker.exe	31
PID 2088 wrote to memory of 1408	2088	2024-08-08_c90ddbb406317775b15cb014c9017dcd_cryptolocker.exe	31
PID 2088 wrote to memory of 1408	2088	2024-08-08_c90ddbb406317775b15cb014c9017dcd_cryptolocker.exe	31

C:\Users\Admin\AppData\Local\Temp\2024-08-08_c90ddbb406317775b15cb014c9017dcd_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-08_c90ddbb406317775b15cb014c9017dcd_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2088
- 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:1408

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
82KB

MD5
01741b12030aec2899592c4bac157ee8

SHA1
b323035a1ff74a0545210571c01e850c8cc9cec2

SHA256
573683065ce5b45da3387f37dc7f54e5a9f690b9621b3bd85e4c74203ec4d644

SHA512
1f1e890c2aaaed811c8b194021f3ea3839ecdab55e730ecc31be4636beed491c0e0190eb6b351a34479853f91122924b96a0b44d5c3147eccaa435027337ebcc

Download Submit
memory/1408-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1408-18-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/1408-25-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1408-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2088-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2088-1-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2088-2-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2088-9-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2088-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download