dbe98e518832e5c6611af2df7be37d7ba31a0e64bfdf2e2f0874fe8fe70181b0

Analysis

max time kernel
150s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
25/01/2024, 11:23

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General

Target
server.exe
Size 91KB
Sample240125-ng7e9aeef9
SHA256 dbe98e518832e5c6611af2df7be37d7ba31a0e64bfdf2e2f0874fe8fe70181b0
MD5 09b4a05f909c61a665a2cef28e5446b9
SHA1 8229819d49316ce151ce5a1297deae62e6ef8502
SHA512 776d2518db965bc53211283516b001a1a273647c6517a12fcc4e37ca74654b1a09ae19b70879918e33e875461f54630a39c8fde0476546f7075b6ce38cfa5537
SSDEEP 1536:IH0RK+ufM3vdIXq7wnais4k6O7IFVR18pNv:20SM3vdIAWj5kIFVRqN
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

evasion

Malware Config

Signatures

Modifies Windows Firewall 1 TTPs 3 IoCs

evasion

Windows Service

T1543.003

pid	Process
2660	netsh.exe
4912	netsh.exe
1140	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-1-5-21-1168293393-3419776239-306423207-1000\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\Svhost.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Svhost.exe	server.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\3566dbb9778707b999fd6bd5d32be2e8Windows Update.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\3566dbb9778707b999fd6bd5d32be2e8Windows Update.exe	server.exe

Executes dropped EXE 1 IoCs

pid	Process
2180	server.exe

Drops autorun.inf file 1 TTPs 4 IoCs

Malware can abuse Windows Autorun to spread further via attached volumes.

Replication Through Removable Media

T1091

description	ioc	Process
File created	C:\autorun.inf	server.exe
File opened for modification	C:\autorun.inf	server.exe
File created	F:\autorun.inf	server.exe
File opened for modification	F:\autorun.inf	server.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Svhost.exe	server.exe
File opened for modification	C:\Windows\SysWOW64\Svhost.exe	server.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Svhost.exe	server.exe
File opened for modification	C:\Program Files (x86)\Svhost.exe	server.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe
2180	server.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2180	server.exe

Suspicious use of AdjustPrivilegeToken 37 IoCs

description	pid	Process
Token: SeDebugPrivilege	2180	server.exe
Token: 33	2180	server.exe
Token: SeIncBasePriorityPrivilege	2180	server.exe
Token: 33	2180	server.exe
Token: SeIncBasePriorityPrivilege	2180	server.exe
Token: 33	2180	server.exe
Token: SeIncBasePriorityPrivilege	2180	server.exe
Token: 33	2180	server.exe
Token: SeIncBasePriorityPrivilege	2180	server.exe
Token: 33	2180	server.exe
Token: SeIncBasePriorityPrivilege	2180	server.exe
Token: 33	2180	server.exe
Token: SeIncBasePriorityPrivilege	2180	server.exe
Token: 33	2180	server.exe
Token: SeIncBasePriorityPrivilege	2180	server.exe
Token: 33	2180	server.exe
Token: SeIncBasePriorityPrivilege	2180	server.exe
Token: 33	2180	server.exe
Token: SeIncBasePriorityPrivilege	2180	server.exe
Token: 33	2180	server.exe
Token: SeIncBasePriorityPrivilege	2180	server.exe
Token: 33	2180	server.exe
Token: SeIncBasePriorityPrivilege	2180	server.exe
Token: 33	2180	server.exe
Token: SeIncBasePriorityPrivilege	2180	server.exe
Token: 33	2180	server.exe
Token: SeIncBasePriorityPrivilege	2180	server.exe
Token: 33	2180	server.exe
Token: SeIncBasePriorityPrivilege	2180	server.exe
Token: 33	2180	server.exe
Token: SeIncBasePriorityPrivilege	2180	server.exe
Token: 33	2180	server.exe
Token: SeIncBasePriorityPrivilege	2180	server.exe
Token: 33	2180	server.exe
Token: SeIncBasePriorityPrivilege	2180	server.exe
Token: 33	2180	server.exe
Token: SeIncBasePriorityPrivilege	2180	server.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4160 wrote to memory of 2180	4160	server.exe	87
PID 4160 wrote to memory of 2180	4160	server.exe	87
PID 4160 wrote to memory of 2180	4160	server.exe	87
PID 2180 wrote to memory of 2660	2180	server.exe	89
PID 2180 wrote to memory of 2660	2180	server.exe	89
PID 2180 wrote to memory of 2660	2180	server.exe	89
PID 2180 wrote to memory of 1140	2180	server.exe	96
PID 2180 wrote to memory of 1140	2180	server.exe	96
PID 2180 wrote to memory of 1140	2180	server.exe	96
PID 2180 wrote to memory of 4912	2180	server.exe	95
PID 2180 wrote to memory of 4912	2180	server.exe	95
PID 2180 wrote to memory of 4912	2180	server.exe	95

C:\Users\Admin\AppData\Local\Temp\server.exe
"C:\Users\Admin\AppData\Local\Temp\server.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4160
- C:\ProgramData\server.exe
  "C:\ProgramData\server.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Drops autorun.inf file
  - Drops file in System32 directory
  - Drops file in Program Files directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2180
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\ProgramData\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:2660
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\ProgramData\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:4912
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall delete allowedprogram "C:\ProgramData\server.exe"
    3⤵
    - Modifies Windows Firewall
    PID:1140

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Replication Through Removable Media

T1091

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

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Replication Through Removable Media

T1091

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

server.exe

Path C:\ProgramData\server.exe
Size 91KB
SHA256 dbe98e518832e5c6611af2df7be37d7ba31a0e64bfdf2e2f0874fe8fe70181b0
MD5 09b4a05f909c61a665a2cef28e5446b9
SHA1 8229819d49316ce151ce5a1297deae62e6ef8502
SHA512 776d2518db965bc53211283516b001a1a273647c6517a12fcc4e37ca74654b1a09ae19b70879918e33e875461f54630a39c8fde0476546f7075b6ce38cfa5537
SSDEEP 1536:IH0RK+ufM3vdIXq7wnais4k6O7IFVR18pNv:20SM3vdIAWj5kIFVRqN
MD5 SHA1 SHA512 SSDEEP

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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 275918973c23ad700f278c69cc03c9c82ec9f4d9ed0f53111ad22bec197ff440
MD5 cac4598fdc0f92181616d12833eb6ca1
SHA1 80a7b7a46a0e8e674b782b9eb569e5430a69c84b
SHA512 01a7556bfcce6d9d8251aadc7f6e6169fdd0477d487ce88729c44bfe8b85b2eee500985d553c0479765ef5b5c6dc3517c0305efb9089814c3f8a9ea6fc51c713
MD5 SHA1 SHA512

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memory/2180-16-0x0000000000BC0000-0x0000000000BD0000-memory.dmp

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memory/2180-17-0x0000000074DB0000-0x0000000075361000-memory.dmp

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memory/2180-15-0x0000000074DB0000-0x0000000075361000-memory.dmp

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memory/2180-49-0x0000000074DB0000-0x0000000075361000-memory.dmp

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memory/2180-50-0x0000000000BC0000-0x0000000000BD0000-memory.dmp

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memory/4160-0-0x0000000074DB0000-0x0000000075361000-memory.dmp

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memory/4160-2-0x0000000000A60000-0x0000000000A70000-memory.dmp

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memory/4160-1-0x0000000074DB0000-0x0000000075361000-memory.dmp

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memory/4160-14-0x0000000074DB0000-0x0000000075361000-memory.dmp

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