8d2a5e851d21fdf6525889c83bc871ca7762c7cd06484679453b871ff99616b5

Analysis

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

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02-11-2024 06:19

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General

Target

2024-11-02_b9707d541287b1c767e0fe290987e2ec_cryptolocker.exe
Size

56KB
MD5

b9707d541287b1c767e0fe290987e2ec
SHA1

3bad6acf5d57c40f965dab97fcba285f299ee333
SHA256

8d2a5e851d21fdf6525889c83bc871ca7762c7cd06484679453b871ff99616b5
SHA512

a96cce459be500debeec588af82082c013c383ee2a4d51003a470c910211e3488be87f9f828229381333251e00d08016f6e0b39075667bf9230c673f6fe480fe
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzp0oj67Jn:aq7tdgI2MyzNORQtOflIwoHNV2XBFV71

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

hurok.exe

pid process

2804 hurok.exe
Loads dropped DLL 1 IoCs

Processes:

2024-11-02_b9707d541287b1c767e0fe290987e2ec_cryptolocker.exe

pid process

2984 2024-11-02_b9707d541287b1c767e0fe290987e2ec_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2804	hurok.exe

pid	process
2984	2024-11-02_b9707d541287b1c767e0fe290987e2ec_cryptolocker.exe

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

Processes:

hurok.exe2024-11-02_b9707d541287b1c767e0fe290987e2ec_cryptolocker.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hurok.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-11-02_b9707d541287b1c767e0fe290987e2ec_cryptolocker.exe

Suspicious use of UnmapMainImage 2 IoCs

Processes:

2024-11-02_b9707d541287b1c767e0fe290987e2ec_cryptolocker.exehurok.exe

pid process

2984 2024-11-02_b9707d541287b1c767e0fe290987e2ec_cryptolocker.exe
2804 hurok.exe

pid	process
2984	2024-11-02_b9707d541287b1c767e0fe290987e2ec_cryptolocker.exe
2804	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-11-02_b9707d541287b1c767e0fe290987e2ec_cryptolocker.exe

description	pid	process	target process
PID 2984 wrote to memory of 2804	2984	2024-11-02_b9707d541287b1c767e0fe290987e2ec_cryptolocker.exe	hurok.exe
PID 2984 wrote to memory of 2804	2984	2024-11-02_b9707d541287b1c767e0fe290987e2ec_cryptolocker.exe	hurok.exe
PID 2984 wrote to memory of 2804	2984	2024-11-02_b9707d541287b1c767e0fe290987e2ec_cryptolocker.exe	hurok.exe
PID 2984 wrote to memory of 2804	2984	2024-11-02_b9707d541287b1c767e0fe290987e2ec_cryptolocker.exe	hurok.exe

C:\Users\Admin\AppData\Local\Temp\2024-11-02_b9707d541287b1c767e0fe290987e2ec_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-02_b9707d541287b1c767e0fe290987e2ec_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2984

C:\Users\Admin\AppData\Local\Temp\hurok.exe
"C:\Users\Admin\AppData\Local\Temp\hurok.exe"
2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
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

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Downloads

C:\Users\Admin\AppData\Local\Temp\hurok.exe

Filesize
56KB

MD5
f5caf92dcab7abf4f29e347b3edab5ff

SHA1
69a30db97612e4b51a54953cfcddc0947ea53d65

SHA256
a41e4962fcd7d2407cdd0c350d5048718e9f3dab7f8ed4134b0d2cf0ffecb09d

SHA512
6a0cfa7e7533ca9beebb2d3e952bc207648672e0f936c969ed017155b430d56f668ee4b46886ef8ca0064b13b681b5d4a311080d36123cdc8077bfdc816e5c45

Download Submit
memory/2804-23-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2984-8-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/2984-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2984-0-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download