e9b1bd9e41041f4a1fee03def553d367cec8e664277612b235bda09dc3441abe

Analysis

max time kernel
139s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
11/10/2023, 10:52

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General

Target

2023-08-26_a454c3ce4d27110175a265a39207c11e_cryptolocker_JC.exe
Size

74KB
MD5

a454c3ce4d27110175a265a39207c11e
SHA1

e1e2f30c2778e68515a997f355b90ff077667471
SHA256

e9b1bd9e41041f4a1fee03def553d367cec8e664277612b235bda09dc3441abe
SHA512

f9e458db60426d910055d2f1815886ad9e230e45971e671c9931e5a95036b5d85fb29a7cd75d92f337f587d56b838a9fa06f549c3558cb705ce30751ec67a5cb
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOA+YSd:T6a+rdOOtEvwDpjNb

Score

7^/10

upx

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-919254492-3979293997-764407192-1000\Control Panel\International\Geo\Nation	2023-08-26_a454c3ce4d27110175a265a39207c11e_cryptolocker_JC.exe

Executes dropped EXE 1 IoCs

pid	Process
4236	asih.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3156-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x00080000000231bf-13.dat	upx
behavioral2/files/0x00080000000231bf-15.dat	upx
behavioral2/memory/3156-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x00080000000231bf-16.dat	upx
behavioral2/memory/4236-26-0x0000000000500000-0x0000000000510000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3156 wrote to memory of 4236	3156	2023-08-26_a454c3ce4d27110175a265a39207c11e_cryptolocker_JC.exe	86
PID 3156 wrote to memory of 4236	3156	2023-08-26_a454c3ce4d27110175a265a39207c11e_cryptolocker_JC.exe	86
PID 3156 wrote to memory of 4236	3156	2023-08-26_a454c3ce4d27110175a265a39207c11e_cryptolocker_JC.exe	86

C:\Users\Admin\AppData\Local\Temp\2023-08-26_a454c3ce4d27110175a265a39207c11e_cryptolocker_JC.exe
"C:\Users\Admin\AppData\Local\Temp\2023-08-26_a454c3ce4d27110175a265a39207c11e_cryptolocker_JC.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3156
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4236

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
74KB

MD5
6294429d1ddab799d8aeef0c8ac04b84

SHA1
aac3fe3b6191b68efe221f5c12adf709077c8a55

SHA256
f2ddc4e2f612c165e0e8c805f0490f6571aa814ecdd89bc67417b72dede5d95e

SHA512
f2c53d6a323b1827464825e58a3773fe9499408fdf0bb1237f8a07d628ce090bf681211d8af47de0374e5aac907b35c5040ffa7cb3feb226a77a55feb3500d0d

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

Filesize
74KB

MD5
6294429d1ddab799d8aeef0c8ac04b84

SHA1
aac3fe3b6191b68efe221f5c12adf709077c8a55

SHA256
f2ddc4e2f612c165e0e8c805f0490f6571aa814ecdd89bc67417b72dede5d95e

SHA512
f2c53d6a323b1827464825e58a3773fe9499408fdf0bb1237f8a07d628ce090bf681211d8af47de0374e5aac907b35c5040ffa7cb3feb226a77a55feb3500d0d

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

Filesize
74KB

MD5
6294429d1ddab799d8aeef0c8ac04b84

SHA1
aac3fe3b6191b68efe221f5c12adf709077c8a55

SHA256
f2ddc4e2f612c165e0e8c805f0490f6571aa814ecdd89bc67417b72dede5d95e

SHA512
f2c53d6a323b1827464825e58a3773fe9499408fdf0bb1237f8a07d628ce090bf681211d8af47de0374e5aac907b35c5040ffa7cb3feb226a77a55feb3500d0d

Download Submit
memory/3156-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3156-1-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/3156-2-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/3156-3-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/3156-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4236-20-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4236-19-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/4236-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download