11eb37eeea3e5416e0e65a56a1d9fc1293487df7ed3723521dab378028d4c390

Analysis

max time kernel
141s
max time network
140s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03-09-2024 06:23

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General

Target

2024-09-03_8fec584f8358cc4a1478fbf656ac63a7_cryptolocker.exe
Size

36KB
MD5

8fec584f8358cc4a1478fbf656ac63a7
SHA1

719cb356d1a3945cbe6994ab34d260a5bb3f5ee7
SHA256

11eb37eeea3e5416e0e65a56a1d9fc1293487df7ed3723521dab378028d4c390
SHA512

e41c178ef83f72ffb756a317a6bb90aee8a8906c3f71bf4ae24ba94c90c07f766e7051f2289c51c8358017fd24ddbdd4358065c3caa7bdbc2b1f6fdbcfdec4e5
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkIT6s:qDdFJy3QMOtEvwDpjjWMl7T6s

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2912	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2400	2024-09-03_8fec584f8358cc4a1478fbf656ac63a7_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2400-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x00080000000120ff-14.dat	upx
behavioral1/memory/2400-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2912-27-0x0000000000500000-0x0000000000510000-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	asih.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-03_8fec584f8358cc4a1478fbf656ac63a7_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2400 wrote to memory of 2912	2400	2024-09-03_8fec584f8358cc4a1478fbf656ac63a7_cryptolocker.exe	28
PID 2400 wrote to memory of 2912	2400	2024-09-03_8fec584f8358cc4a1478fbf656ac63a7_cryptolocker.exe	28
PID 2400 wrote to memory of 2912	2400	2024-09-03_8fec584f8358cc4a1478fbf656ac63a7_cryptolocker.exe	28
PID 2400 wrote to memory of 2912	2400	2024-09-03_8fec584f8358cc4a1478fbf656ac63a7_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-09-03_8fec584f8358cc4a1478fbf656ac63a7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-03_8fec584f8358cc4a1478fbf656ac63a7_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2400
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2912

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

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

Filesize
36KB

MD5
5fe23a738ebdee906cef50449d0c2b98

SHA1
ba8d99b51020e8ba7b0ad0fce335df584669c7c7

SHA256
7ad53cd9bd645e3756c995615f647a79c6ced23dff79a9ff951119b5e63ceaf3

SHA512
b1b08e2655891fed03d5d51995979a0e66148a13f2ab8cf4cf653d7ace0f24bffc9dd6d96b4b12cf6a668e1668180bf806699c081e19fb6866d62f7c20debd65

Download Submit
memory/2400-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2400-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2400-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2400-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2400-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2400-26-0x00000000004F0000-0x0000000000500000-memory.dmp

Filesize
64KB

Download
memory/2912-25-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2912-18-0x0000000000530000-0x0000000000536000-memory.dmp

Filesize
24KB

Download
memory/2912-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download