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-1-5-21-101591186-421676486-4137282292-1000\Control Panel\International\Geo\Nation	start.exe

Executes dropped EXE 7 IoCs

pid	Process
1288	Drlvers.exe
2720	Drlvers.exe
3312	Drlvers.exe
1996	Drlvers.exe
5224	Drlvers.exe
5872	Drlvers.exe
4588	Drlvers.exe

Loads dropped DLL 13 IoCs

pid	Process
3860	Process not Found
2092	Process not Found
1288	Drlvers.exe
2720	Drlvers.exe
3312	Drlvers.exe
1996	Drlvers.exe
4320	Process not Found
2436	Process not Found
4988	Process not Found
1180	Process not Found
5224	Drlvers.exe
5872	Drlvers.exe
4588	Drlvers.exe

Looks up external IP address via web service 1 TTPs 14 IoCs

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

discovery

Internet Connection Discovery

T1016.001

flow	ioc
74	icanhazip.com
92	api.ipify.org
15	api.ipify.org
16	ipinfo.io
17	ipinfo.io
39	api.ipify.org
62	api.ipify.org
103	api.ipify.org
7	api.ipify.org
8	api.ipify.org
11	icanhazip.com
12	icanhazip.com
38	api.ipify.org
73	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	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 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

Drops file in Windows directory 11 IoCs

description	ioc	Process
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	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 created	C:\Windows\Drlvers.exe	start.exe
File created	C:\Windows\xdwd.dll	start.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
3212	cmd.exe
3432	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
5704	schtasks.exe
2868	schtasks.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
1288	Drlvers.exe
1288	Drlvers.exe
2720	Drlvers.exe
2720	Drlvers.exe
3312	Drlvers.exe
3312	Drlvers.exe
1996	Drlvers.exe
1996	Drlvers.exe
5224	Drlvers.exe
5224	Drlvers.exe
5872	Drlvers.exe
5872	Drlvers.exe
4588	Drlvers.exe
4588	Drlvers.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	4760	start.exe
Token: SeDebugPrivilege	1288	Drlvers.exe
Token: SeDebugPrivilege	2720	Drlvers.exe
Token: SeDebugPrivilege	3312	Drlvers.exe
Token: SeIncBasePriorityPrivilege	1288	Drlvers.exe
Token: SeDebugPrivilege	1996	Drlvers.exe
Token: SeDebugPrivilege	5224	Drlvers.exe
Token: SeDebugPrivilege	5872	Drlvers.exe
Token: SeDebugPrivilege	4588	Drlvers.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4760 wrote to memory of 2876	4760	start.exe	85
PID 4760 wrote to memory of 3432	4760	start.exe	86
PID 3432 wrote to memory of 5704	3432	cmd.exe	89
PID 4760 wrote to memory of 3212	4760	start.exe	90
PID 3212 wrote to memory of 2868	3212	cmd.exe	92
PID 4760 wrote to memory of 2720	4760	start.exe	96

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:4760
- 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:2876
- 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:3432
- - 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:5704
- 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:3212
- - 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:2868
- 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:2720

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:1288

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:3312

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:1996

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:5224

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:5872

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:4588

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 7ab36169585ab02f0372b37a1442b9b117aba7515515c1813d23606f41dbb9bb
MD5 45e017cb1e5b78cb644a8f3a12dcf234
SHA1 ec14f82842f6331df1df460d9a60fb0bcb1c22cf
SHA512 417cf18f4e229756a1798a218ebc0cff3522418c0035050f22393a5430be03378581d442160967e734cbbf55e96f65e5e8dfca5d10fa33bb5e230070281175c0
TLSH
T19511AB7133B1A1D48A563F47187C258413FF4358FA90AE5C7AA8A26ED82B4171F322F3
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/4760-0-0x0000027EC7640000-0x0000027EC76D0000-memory.dmp

Download

memory/4760-1-0x0000027EC9660000-0x0000027EC9670000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads