84b10fd0dcf437aebcaec2e6598c09286d47861f15d83349fedd68f533dd721c

Analysis

max time kernel
141s
max time network
139s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
10-10-2024 00:11

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General

Target

2024-10-09_8efefcbbf7210363620920776e53e9ca_cryptolocker.exe
Size

39KB
MD5

8efefcbbf7210363620920776e53e9ca
SHA1

9b070649719edffa1ef8e016ae856135290ec978
SHA256

84b10fd0dcf437aebcaec2e6598c09286d47861f15d83349fedd68f533dd721c
SHA512

32e8b0d7a1a5ecb0d1a3339bfaf410081373fb8601ec2a0a503f511220ab21d96f66ad72f9a8c19f7220b2c3daac57375a5fe574985a8a9138400a037899442b
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYaBu:qDdFJy3QMOtEvwDpjjWMl7Tdk

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2380	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2476	2024-10-09_8efefcbbf7210363620920776e53e9ca_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2476-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x0007000000012101-14.dat	upx
behavioral1/memory/2380-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2476-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2380-27-0x0000000000500000-0x0000000000510000-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	2024-10-09_8efefcbbf7210363620920776e53e9ca_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	asih.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2476 wrote to memory of 2380	2476	2024-10-09_8efefcbbf7210363620920776e53e9ca_cryptolocker.exe	30
PID 2476 wrote to memory of 2380	2476	2024-10-09_8efefcbbf7210363620920776e53e9ca_cryptolocker.exe	30
PID 2476 wrote to memory of 2380	2476	2024-10-09_8efefcbbf7210363620920776e53e9ca_cryptolocker.exe	30
PID 2476 wrote to memory of 2380	2476	2024-10-09_8efefcbbf7210363620920776e53e9ca_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-10-09_8efefcbbf7210363620920776e53e9ca_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-09_8efefcbbf7210363620920776e53e9ca_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2476
- 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:2380

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
40KB

MD5
25bcb12161350c9c2ba60f987cc519bc

SHA1
5085ffca61e89e311449276acf64b8270d749826

SHA256
88c2986d66a7af77b3644164827d264a88d34c202e2f2a7f673b070bd56b7b03

SHA512
6920491682719861902f0eb92f6dc59246a9c693cd3f67571835e1236be91a87849d9008a928f51fa4fa1425803601ef7b69c924592bfdbcdcd7688f1455d961

Download Submit
memory/2380-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2380-22-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2380-19-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/2380-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2476-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2476-1-0x0000000000430000-0x0000000000436000-memory.dmp

Filesize
24KB

Download
memory/2476-2-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2476-9-0x0000000000430000-0x0000000000436000-memory.dmp

Filesize
24KB

Download
memory/2476-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download