de65c691b1f5b370359060bd2bba71b3185a9ead39f9d6a94cea67e334f12784

Analysis

max time kernel
110s
max time network
117s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
01/10/2024, 07:32

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General

Target

de65c691b1f5b370359060bd2bba71b3185a9ead39f9d6a94cea67e334f12784N.exe
Size

55KB
MD5

f88353feb845bbe3832a4171fd5c9440
SHA1

a100e077b0e35aca2a80b5c7361b9611f685cf78
SHA256

de65c691b1f5b370359060bd2bba71b3185a9ead39f9d6a94cea67e334f12784
SHA512

fd7daae2c05269380dd8445ac8232fbb61c45aa7c111c46fa02e85627a8bb1432c857742de93db5b7282f6e1a1b072d9d52618abd3cc1516361840c07115c506
SSDEEP

768:bco/2n1TCraU6GD1P2wZEjbhxnbcuyD7U9kXDn62tH/1/LpPFP8S:b7/y28wZEjbnouy8G76iH/NLpf

Score

7^/10

discovery 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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	de65c691b1f5b370359060bd2bba71b3185a9ead39f9d6a94cea67e334f12784N.exe

Executes dropped EXE 1 IoCs

pid	Process
2292	rewok.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3052-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral2/files/0x00080000000234c1-13.dat	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	de65c691b1f5b370359060bd2bba71b3185a9ead39f9d6a94cea67e334f12784N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rewok.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3052 wrote to memory of 2292	3052	de65c691b1f5b370359060bd2bba71b3185a9ead39f9d6a94cea67e334f12784N.exe	83
PID 3052 wrote to memory of 2292	3052	de65c691b1f5b370359060bd2bba71b3185a9ead39f9d6a94cea67e334f12784N.exe	83
PID 3052 wrote to memory of 2292	3052	de65c691b1f5b370359060bd2bba71b3185a9ead39f9d6a94cea67e334f12784N.exe	83

C:\Users\Admin\AppData\Local\Temp\de65c691b1f5b370359060bd2bba71b3185a9ead39f9d6a94cea67e334f12784N.exe
"C:\Users\Admin\AppData\Local\Temp\de65c691b1f5b370359060bd2bba71b3185a9ead39f9d6a94cea67e334f12784N.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3052
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2292

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

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\rewok.exe

Filesize
55KB

MD5
f2c899cb4997717c012d7c565d2f1c3c

SHA1
5df211cd5f728b4f5d97d211048915e609a92ea7

SHA256
a676808b5cd128ff712d3f10387940f88348a383925b451eaff3dba4bbd1d35f

SHA512
cdd41985b259705b5aa10b6abbe657e8f36f8a0fab2ac0b7807069d6a5b60f802b488f1b57bf077904b9340b67a5cec1eaa83a789c6d2e691cf612963843b35a

Download Submit
memory/2292-26-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download
memory/3052-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/3052-1-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/3052-2-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/3052-3-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download