bd4bbfaa22dc3cb00b5cbc8b64868b80ca02609fce5ddd910b289a9a06f1ed53

General

Target
QWP-0716.xls.scr
Size 787KB
Sample210107-elmgettk92
SHA256 bd4bbfaa22dc3cb00b5cbc8b64868b80ca02609fce5ddd910b289a9a06f1ed53
MD5 24ce9270950ad2bf6be0bd1c5056aeef
SHA1 9e787d768e6fd9db48736189efaede169cdb811f
SHA512 58b09d641588cfbb41254169bcbe6804763816e106b40aed7d77050fba590f0940faaf43294e202e5c843149708fcd11e4559457e403b33eb8b94f4327657eae
MD5 SHA1 SHA512

Score

10^/10

persistence spyware

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\pdf.exe,"	reg.exe

Executes dropped EXE 2 IoCs

pid	Process
808	pdf.exe
1760	InstallUtil.exe

Loads dropped DLL 2 IoCs

pid	Process
1852	QWP-0716.xls.scr
808	pdf.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware

Data from Local System
T1005

Credentials in Files
T1081

Looks up external IP address via web service 3 IoCs

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

flow	ioc
11	freegeoip.app
5	checkip.dyndns.org
10	freegeoip.app

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 808 set thread context of 1760	808	pdf.exe	33

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1852	QWP-0716.xls.scr
1852	QWP-0716.xls.scr
1852	QWP-0716.xls.scr
1852	QWP-0716.xls.scr
1852	QWP-0716.xls.scr
808	pdf.exe
808	pdf.exe
1760	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1852	QWP-0716.xls.scr
Token: SeDebugPrivilege	808	pdf.exe
Token: SeDebugPrivilege	1760	InstallUtil.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1852 wrote to memory of 1972	1852	QWP-0716.xls.scr	26
PID 1852 wrote to memory of 1972	1852	QWP-0716.xls.scr	26
PID 1852 wrote to memory of 1972	1852	QWP-0716.xls.scr	26
PID 1852 wrote to memory of 1972	1852	QWP-0716.xls.scr	26
PID 1972 wrote to memory of 1856	1972	cmd.exe	28
PID 1972 wrote to memory of 1856	1972	cmd.exe	28
PID 1972 wrote to memory of 1856	1972	cmd.exe	28
PID 1972 wrote to memory of 1856	1972	cmd.exe	28
PID 1852 wrote to memory of 808	1852	QWP-0716.xls.scr	32
PID 1852 wrote to memory of 808	1852	QWP-0716.xls.scr	32
PID 1852 wrote to memory of 808	1852	QWP-0716.xls.scr	32
PID 1852 wrote to memory of 808	1852	QWP-0716.xls.scr	32
PID 808 wrote to memory of 1760	808	pdf.exe	33
PID 808 wrote to memory of 1760	808	pdf.exe	33
PID 808 wrote to memory of 1760	808	pdf.exe	33
PID 808 wrote to memory of 1760	808	pdf.exe	33
PID 808 wrote to memory of 1760	808	pdf.exe	33
PID 808 wrote to memory of 1760	808	pdf.exe	33
PID 808 wrote to memory of 1760	808	pdf.exe	33
PID 808 wrote to memory of 1760	808	pdf.exe	33
PID 808 wrote to memory of 1760	808	pdf.exe	33
PID 808 wrote to memory of 1760	808	pdf.exe	33
PID 808 wrote to memory of 1760	808	pdf.exe	33
PID 808 wrote to memory of 1760	808	pdf.exe	33

C:\Users\Admin\AppData\Local\Temp\QWP-0716.xls.scr
"C:\Users\Admin\AppData\Local\Temp\QWP-0716.xls.scr" /S
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1852
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v "Shell" /t REG_SZ /d "explorer.exe,C:\Users\Admin\pdf.exe,"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1972
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v "Shell" /t REG_SZ /d "explorer.exe,C:\Users\Admin\pdf.exe,"
    3⤵
    - Modifies WinLogon for persistence
    PID:1856
- C:\Users\Admin\pdf.exe
  "C:\Users\Admin\pdf.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:808
- - C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
    "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1760

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/808-13-0x0000000074840000-0x0000000074F2E000-memory.dmp

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memory/808-14-0x0000000000350000-0x0000000000351000-memory.dmp

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memory/808-19-0x0000000000850000-0x0000000000851000-memory.dmp

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memory/808-18-0x0000000000830000-0x000000000083B000-memory.dmp

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memory/1760-22-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/1760-25-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/1760-26-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/1760-27-0x0000000074840000-0x0000000074F2E000-memory.dmp

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memory/1852-2-0x0000000074840000-0x0000000074F2E000-memory.dmp

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memory/1852-6-0x0000000000290000-0x0000000000291000-memory.dmp

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memory/1852-5-0x0000000000370000-0x000000000038E000-memory.dmp

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memory/1852-3-0x00000000002A0000-0x00000000002A1000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads