7197c0f6310135ffe9e34af0c013bce6443d705659ab35310b052f2f5ea43e0d

Analysis

max time kernel
147s
max time network
159s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
13/06/2024, 01:18

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General

Target
Server.exe
Size 93KB
Sample240613-bpbx4aselp
SHA256 7197c0f6310135ffe9e34af0c013bce6443d705659ab35310b052f2f5ea43e0d
MD5 d4e69f46ac4bd8fb65d2fb60852708a4
SHA1 92b82d575a7ec29727477f449b04c4a6e29e52a4
SHA512 d90d5a09024a44a3e647081e5a1642c78b14061f41590f07e69b625a406397bac471091314f07d51c81d13c97625abdf787d0b6405125b9c38dc356ad6b0271f
SSDEEP 1536:v5rnEoSnsqS5ut/YMR8SjEwzGi1dDqDEgS:v53SnsqS5uVYM+7i1d09
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

evasion

Malware Config

Signatures

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
4224	netsh.exe

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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	Server.exe

Drops startup file 4 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exe	server.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\b4b0e85f0431d892cccef3603f549d76Windows Update.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\b4b0e85f0431d892cccef3603f549d76Windows Update.exe	server.exe

Executes dropped EXE 1 IoCs

pid	Process
5048	server.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\server.exe	Server.exe
File opened for modification	C:\Windows\server.exe	server.exe

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

System Information Discovery
T1082

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
5048	server.exe

Suspicious use of AdjustPrivilegeToken 37 IoCs

description	pid	Process
Token: SeDebugPrivilege	5048	server.exe
Token: 33	5048	server.exe
Token: SeIncBasePriorityPrivilege	5048	server.exe
Token: 33	5048	server.exe
Token: SeIncBasePriorityPrivilege	5048	server.exe
Token: 33	5048	server.exe
Token: SeIncBasePriorityPrivilege	5048	server.exe
Token: 33	5048	server.exe
Token: SeIncBasePriorityPrivilege	5048	server.exe
Token: 33	5048	server.exe
Token: SeIncBasePriorityPrivilege	5048	server.exe
Token: 33	5048	server.exe
Token: SeIncBasePriorityPrivilege	5048	server.exe
Token: 33	5048	server.exe
Token: SeIncBasePriorityPrivilege	5048	server.exe
Token: 33	5048	server.exe
Token: SeIncBasePriorityPrivilege	5048	server.exe
Token: 33	5048	server.exe
Token: SeIncBasePriorityPrivilege	5048	server.exe
Token: 33	5048	server.exe
Token: SeIncBasePriorityPrivilege	5048	server.exe
Token: 33	5048	server.exe
Token: SeIncBasePriorityPrivilege	5048	server.exe
Token: 33	5048	server.exe
Token: SeIncBasePriorityPrivilege	5048	server.exe
Token: 33	5048	server.exe
Token: SeIncBasePriorityPrivilege	5048	server.exe
Token: 33	5048	server.exe
Token: SeIncBasePriorityPrivilege	5048	server.exe
Token: 33	5048	server.exe
Token: SeIncBasePriorityPrivilege	5048	server.exe
Token: 33	5048	server.exe
Token: SeIncBasePriorityPrivilege	5048	server.exe
Token: 33	5048	server.exe
Token: SeIncBasePriorityPrivilege	5048	server.exe
Token: 33	5048	server.exe
Token: SeIncBasePriorityPrivilege	5048	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 868 wrote to memory of 5048	868	Server.exe	85
PID 868 wrote to memory of 5048	868	Server.exe	85
PID 868 wrote to memory of 5048	868	Server.exe	85
PID 5048 wrote to memory of 4224	5048	server.exe	86
PID 5048 wrote to memory of 4224	5048	server.exe	86
PID 5048 wrote to memory of 4224	5048	server.exe	86

C:\Users\Admin\AppData\Local\Temp\Server.exe
"C:\Users\Admin\AppData\Local\Temp\Server.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:868
- C:\Windows\server.exe
  "C:\Windows\server.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Drops file in Windows directory
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5048
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Windows\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:4224

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

server.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\server.exe.log
Size 408B
SHA256 8f27f95ad7c09f2e05d7960e78ef8cd935c1262e9657883a75d70dcb877592d2
MD5 661cab77d3b907e8057f2e689e995af3
SHA1 5d1a0ee9c5ee7a7a90d56d00c10dc0e679bee01c
SHA512 2523b316bd79fed0e9b3d73f46959f3dfe270cf950f34bd9d49fe4113a2ae46d0cd00224d848bc40c0d8c55449e2dccc4b4278ba4809c0ca9ede1ac75673fc67
MD5 SHA1 SHA512

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app

Path C:\Users\Admin\AppData\Roaming\app
Size 5B
SHA256 a7aa76f137ba550c381cfb8e5195a01963ae49db167e1cd1e0a8b902ed81eda1
MD5 bbcd2be775370c1e106e66d077a93f3b
SHA1 a44b6a98f30e3275fc304bc3b29e0eab8ae47f20
SHA512 bb6e0d1f24253a9525fd538debf8ca68eb7078cb8539140c184331a854ecdea192fbcc314c4154a0a474c9aec41a79efeb8150922454c3c9e71eeb5297ae2f72
MD5 SHA1 SHA512

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server.exe

Path C:\Windows\server.exe
Size 93KB
SHA256 7197c0f6310135ffe9e34af0c013bce6443d705659ab35310b052f2f5ea43e0d
MD5 d4e69f46ac4bd8fb65d2fb60852708a4
SHA1 92b82d575a7ec29727477f449b04c4a6e29e52a4
SHA512 d90d5a09024a44a3e647081e5a1642c78b14061f41590f07e69b625a406397bac471091314f07d51c81d13c97625abdf787d0b6405125b9c38dc356ad6b0271f
SSDEEP 1536:v5rnEoSnsqS5ut/YMR8SjEwzGi1dDqDEgS:v53SnsqS5uVYM+7i1d09
MD5 SHA1 SHA512 SSDEEP

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memory/868-0-0x0000000074E82000-0x0000000074E83000-memory.dmp

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memory/868-1-0x0000000074E80000-0x0000000075431000-memory.dmp

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memory/868-2-0x0000000074E80000-0x0000000075431000-memory.dmp

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memory/868-14-0x0000000074E80000-0x0000000075431000-memory.dmp

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memory/5048-15-0x0000000074E80000-0x0000000075431000-memory.dmp

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memory/5048-16-0x0000000074E80000-0x0000000075431000-memory.dmp

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memory/5048-24-0x0000000074E80000-0x0000000075431000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads