fbe1a132a4dda975e349ba6c6d29e79bf247f0f18a1aeec6d80ce16e7e92ccbb

General

Target
start.exe
Size 558KB
Sample260814-bbq5vsam71
SHA256 fbe1a132a4dda975e349ba6c6d29e79bf247f0f18a1aeec6d80ce16e7e92ccbb
MD5 0322baf8c0e2e6567934f5d94bde7e84
SHA1 c25932c7836bc7f749879efe68153c7d8084b852
SHA512 1d63b187a6871a6ae27dffaf37fa62b4a487b016097a3819a23bdbf2d944aace2b068a366d795ef97b8e0110ab859f70d683a2f6016bf5dc46cdbb6009da09b4
SSDEEP 6144:lJCVxPDfssFMU23mGk6F0Ew+NtTkyxRFVgylVza9GvPswRXNpBdYu7zbfv/Rd7LA:ls9fssq3mSO6tbYITRXNJ/v7LcmsqA
TLSH
T167C439247F948608E590197E459E1A11C7AA91F226327303371AFF611D8ADDEDF2C3EB
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery execution persistence privilege_escalation

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\Windows\\System32\\userinit.exe,C:\\Windows\\Drlvers.exe"	start.exe

Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
persistence privilege_escalation

AppInit DLLs
T1546.010

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-1-5-21-540052884-2969440504-464782435-1000\Control Panel\International\Geo\Nation	start.exe

Executes dropped EXE 7 IoCs

pid	Process
820	Drlvers.exe
4004	Drlvers.exe
1472	Drlvers.exe
2832	Drlvers.exe
784	Drlvers.exe
2380	Drlvers.exe
4420	Drlvers.exe

Loads dropped DLL 14 IoCs

pid	Process
2536	Process not Found
4484	Process not Found
820	Drlvers.exe
4004	Drlvers.exe
2952	Process not Found
1472	Drlvers.exe
2832	Drlvers.exe
1240	Process not Found
868	Process not Found
2448	Process not Found
4068	Process not Found
784	Drlvers.exe
2380	Drlvers.exe
4420	Drlvers.exe

Looks up external IP address via web service 1 TTPs 11 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

discovery

Internet Connection Discovery

T1016.001

flow	ioc
67	icanhazip.com
6	api.ipify.org
8	api.ipify.org
35	api.ipify.org
36	api.ipify.org
76	api.ipify.org
81	api.ipify.org
5	api.ipify.org
7	api.ipify.org
13	api.ipify.org
66	icanhazip.com

Drops file in Program Files directory 9 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\RuntimeBroker.exe	Drlvers.exe
File opened for modification	C:\Program Files\RuntimeBroker.exe	Drlvers.exe
File opened for modification	C:\Program Files\RuntimeBroker.exe	Drlvers.exe
File opened for modification	C:\Program Files\RuntimeBroker.exe	start.exe
File created	C:\Program Files\RuntimeBroker.exe	start.exe
File opened for modification	C:\Program Files\RuntimeBroker.exe	Drlvers.exe
File opened for modification	C:\Program Files\RuntimeBroker.exe	Drlvers.exe
File opened for modification	C:\Program Files\RuntimeBroker.exe	Drlvers.exe
File opened for modification	C:\Program Files\RuntimeBroker.exe	Drlvers.exe

Drops file in Windows directory 11 IoCs

description	ioc	Process
File created	C:\Windows\xdwd.dll	start.exe
File opened for modification	C:\Windows\xdwd.dll	start.exe
File opened for modification	C:\Windows\Drlvers.exe	Drlvers.exe
File opened for modification	C:\Windows\Drlvers.exe	Drlvers.exe
File opened for modification	C:\Windows\Drlvers.exe	Drlvers.exe
File opened for modification	C:\Windows\Drlvers.exe	Drlvers.exe
File opened for modification	C:\Windows\Drlvers.exe	Drlvers.exe
File opened for modification	C:\Windows\Drlvers.exe	Drlvers.exe
File created	C:\Windows\Drlvers.exe	start.exe
File opened for modification	C:\Windows\Drlvers.exe	start.exe
File opened for modification	C:\Windows\Drlvers.exe	Drlvers.exe

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

System Information Discovery
T1082

Executes a command shell one-liner 1 TTPs 2 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
4596	cmd.exe
1852	cmd.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	start.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
3712	schtasks.exe
2172	schtasks.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
820	Drlvers.exe
820	Drlvers.exe
4004	Drlvers.exe
4004	Drlvers.exe
1472	Drlvers.exe
1472	Drlvers.exe
2832	Drlvers.exe
2832	Drlvers.exe
784	Drlvers.exe
784	Drlvers.exe
2380	Drlvers.exe
2380	Drlvers.exe
4420	Drlvers.exe
4420	Drlvers.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	4216	start.exe
Token: SeDebugPrivilege	820	Drlvers.exe
Token: SeDebugPrivilege	4004	Drlvers.exe
Token: SeIncBasePriorityPrivilege	820	Drlvers.exe
Token: SeDebugPrivilege	1472	Drlvers.exe
Token: SeDebugPrivilege	2832	Drlvers.exe
Token: SeDebugPrivilege	784	Drlvers.exe
Token: SeDebugPrivilege	2380	Drlvers.exe
Token: SeDebugPrivilege	4420	Drlvers.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4216 wrote to memory of 2792	4216	start.exe	87
PID 4216 wrote to memory of 4596	4216	start.exe	88
PID 4596 wrote to memory of 3712	4596	cmd.exe	91
PID 4216 wrote to memory of 1852	4216	start.exe	92
PID 1852 wrote to memory of 2172	1852	cmd.exe	94
PID 4216 wrote to memory of 820	4216	start.exe	97

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\start.exe
"C:\Users\Admin\AppData\Local\Temp\start.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4216
- C:\Windows\SYSTEM32\CMD.exe
  "CMD" netsh advfirewall firewall add rule name="/TGjtf&`tG\Hte" dir=in action=allow program="C:\Windows\Drlvers.exe" enable=yes & exit
  2⤵
  PID:2792
- C:\Windows\SYSTEM32\cmd.exe
  "cmd" /c schtasks /create /f /sc minute /mo 1 /tn "RuntimeBroker.exe" /tr "C:\Windows\Drlvers.exe" /RL HIGHEST & exit
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:4596
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc minute /mo 1 /tn "RuntimeBroker.exe" /tr "C:\Windows\Drlvers.exe" /RL HIGHEST
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3712
- C:\Windows\SYSTEM32\cmd.exe
  "cmd" /c schtasks /create /f /sc minute /mo 30 /tn "RuntimeBroker" /tr "C:\Program Files\RuntimeBroker.exe" /RL HIGHEST & exit
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:1852
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc minute /mo 30 /tn "RuntimeBroker" /tr "C:\Program Files\RuntimeBroker.exe" /RL HIGHEST
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2172
- C:\Windows\Drlvers.exe
  "C:\Windows\Drlvers.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:820

C:\Windows\Drlvers.exe
C:\Windows\Drlvers.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4004

C:\Windows\Drlvers.exe
C:\Windows\Drlvers.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1472

C:\Windows\Drlvers.exe
C:\Windows\Drlvers.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2832

C:\Windows\Drlvers.exe
C:\Windows\Drlvers.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:784

C:\Windows\Drlvers.exe
C:\Windows\Drlvers.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2380

C:\Windows\Drlvers.exe
C:\Windows\Drlvers.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4420

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Event Triggered Execution

1

T1546

AppInit DLLs

1

T1546.010

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Event Triggered Execution

1

T1546

AppInit DLLs

1

T1546.010

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

Drlvers.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Drlvers.exe.log
Size 1KB
SHA256 d049789c187b2f58c900eab10205bc037740dca8640ab40c314790fefaab66ff
MD5 f26118d675c61402c218ac6794d90a63
SHA1 ffc8d592f3ca8255ca5119eff5b576eb16ac7fac
SHA512 6f14b71dae095131053a1b590e60ccec4e14c47c745bf9d52de48988d7b93b1f50bbb6bac0222dc49e3e45def052b20be2d34e116991027718da2e0fb8eb45d0
TLSH
T17411CE723371F1D889163F072C68268417BF4724BA90EE0CB5A8626ED9364275F222F3
MD5 SHA1 SHA512 TLSH

Submit Download

xdwd.dll

Path C:\Windows\xdwd.dll
Size 136KB
SHA256 35c8d022e1d917f1aabdceae98097ccc072161b302f84c768ca63e4b32ac2b66
MD5 16e5a492c9c6ae34c59683be9c51fa31
SHA1 97031b41f5c56f371c28ae0d62a2df7d585adaba
SHA512 20fd369172ef5e3e2fde388666b42e8fe5f0c2bfa338c0345f45e98af6561a249ba3ecc48c3f16efcc73f02ecb67b3ddb1e2e8f0e77d18fa00ac34e6379e50b6
SSDEEP 3072:t0iX+jLyDcqaH9a6DFHo6MjD7VbZaZaZ8Xwlk4MHWZpt:t07yDSvdoRj2up
TLSH
T151D35B0772A500BFE1668638C5630A09E777B8211770DBAF33A4429D9F277E19D3AF61
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4216-0-0x000002106D840000-0x000002106D8D0000-memory.dmp

Download

memory/4216-1-0x000002106FFB0000-0x000002106FFC0000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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