masslogger | ad7a57d9fe77aaf343581db70a3fd4a434f6a8ae92fa8731622b3ecf12319321

Analysis

max time kernel
63s
max time network
122s
platform
windows7_x64
resource
win7v20201028
submitted
07/12/2020, 20:21

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General

Target
TAF5xRBqc.rtf
Size 1.5MB
Sample201207-l1kbwpjarx
SHA256 ad7a57d9fe77aaf343581db70a3fd4a434f6a8ae92fa8731622b3ecf12319321
MD5 86c85d3237eb3d4c874298e84147b8dc
SHA1 2ba0e41d45f5db2e87996549c3ebe7a149d1ee72
SHA512 1923bf993f9452eb94e5d9b3d4d62ebc43f29fdf053d282e84a752d4c42312564ead6aa38ab3f708aed132cbea2ecf199b8e46b1de0fc081803016f46b158f3a
MD5 SHA1 SHA512

Score

10^/10

masslogger spyware stealer

Malware Config

Signatures

MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
stealer spyware masslogger

MassLogger Main Payload 4 IoCs

resource	yara_rule
behavioral1/memory/1680-15-0x000000000048203E-mapping.dmp	family_masslogger
behavioral1/memory/1680-14-0x0000000000400000-0x0000000000488000-memory.dmp	family_masslogger
behavioral1/memory/1680-17-0x0000000000400000-0x0000000000488000-memory.dmp	family_masslogger
behavioral1/memory/1680-18-0x0000000000400000-0x0000000000488000-memory.dmp	family_masslogger

Blocklisted process makes network request 5 IoCs

flow	pid	Process
6	2036	EQNEDT32.EXE
7	2036	EQNEDT32.EXE
9	2036	EQNEDT32.EXE
11	2036	EQNEDT32.EXE
13	2036	EQNEDT32.EXE

Executes dropped EXE 2 IoCs

pid	Process
1144	angel376891.exe
1680	angel376891.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-1-5-21-3825035466-2522850611-591511364-1000\Control Panel\International\Geo\Nation	angel376891.exe

Loads dropped DLL 2 IoCs

pid	Process
2036	EQNEDT32.EXE
2036	EQNEDT32.EXE

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 1 IoCs

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

flow	ioc
14	api.ipify.org

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1144 set thread context of 1680	1144	angel376891.exe	35

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Debug\WIA\wiatrace.log	WINWORD.EXE

Office loads VBA resources, possible macro or embedded object present

Launches Equation Editor 1 TTPs 1 IoCs

Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

exploit

Exploitation for Client Execution

T1203

pid	Process
2036	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
776	WINWORD.EXE
1680	angel376891.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1680	angel376891.exe
1680	angel376891.exe
1680	angel376891.exe
1680	angel376891.exe
1340	powershell.exe
1340	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1680	angel376891.exe
Token: SeDebugPrivilege	1340	powershell.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
776	WINWORD.EXE
776	WINWORD.EXE
1680	angel376891.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2036 wrote to memory of 1144	2036	EQNEDT32.EXE	32
PID 2036 wrote to memory of 1144	2036	EQNEDT32.EXE	32
PID 2036 wrote to memory of 1144	2036	EQNEDT32.EXE	32
PID 2036 wrote to memory of 1144	2036	EQNEDT32.EXE	32
PID 1144 wrote to memory of 1680	1144	angel376891.exe	35
PID 1144 wrote to memory of 1680	1144	angel376891.exe	35
PID 1144 wrote to memory of 1680	1144	angel376891.exe	35
PID 1144 wrote to memory of 1680	1144	angel376891.exe	35
PID 1144 wrote to memory of 1680	1144	angel376891.exe	35
PID 1144 wrote to memory of 1680	1144	angel376891.exe	35
PID 1144 wrote to memory of 1680	1144	angel376891.exe	35
PID 1144 wrote to memory of 1680	1144	angel376891.exe	35
PID 1144 wrote to memory of 1680	1144	angel376891.exe	35
PID 776 wrote to memory of 616	776	WINWORD.EXE	37
PID 776 wrote to memory of 616	776	WINWORD.EXE	37
PID 776 wrote to memory of 616	776	WINWORD.EXE	37
PID 776 wrote to memory of 616	776	WINWORD.EXE	37
PID 1680 wrote to memory of 1340	1680	angel376891.exe	38
PID 1680 wrote to memory of 1340	1680	angel376891.exe	38
PID 1680 wrote to memory of 1340	1680	angel376891.exe	38
PID 1680 wrote to memory of 1340	1680	angel376891.exe	38

C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\TAF5xRBqc.rtf"
1⤵
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:776
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:616

C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
1⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:2036
- C:\Users\Admin\AppData\Roaming\angel376891.exe
  "C:\Users\Admin\AppData\Roaming\angel376891.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1144
- - C:\Users\Admin\AppData\Roaming\angel376891.exe
    "C:\Users\Admin\AppData\Roaming\angel376891.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: AddClipboardFormatListener
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1680
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\angel376891.exe'
      4⤵
      Drops file in System32 directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1340

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Exploitation for Client Execution

T1203

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/776-2-0x0000000003F20000-0x0000000003F24000-memory.dmp

Download

memory/776-12-0x0000000001E70000-0x0000000001E71000-memory.dmp

Download

memory/1144-9-0x000000006A9C0000-0x000000006B0AE000-memory.dmp

Download

memory/1144-10-0x0000000001360000-0x0000000001361000-memory.dmp

Download

memory/1144-13-0x0000000000B00000-0x0000000000B94000-memory.dmp

Download

memory/1340-26-0x0000000004AE0000-0x0000000004AE1000-memory.dmp

Download

memory/1340-36-0x00000000060C0000-0x00000000060C1000-memory.dmp

Download

memory/1340-60-0x0000000006310000-0x0000000006311000-memory.dmp

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memory/1340-59-0x0000000006300000-0x0000000006301000-memory.dmp

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memory/1340-45-0x00000000061E0000-0x00000000061E1000-memory.dmp

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memory/1340-44-0x0000000006280000-0x0000000006281000-memory.dmp

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memory/1340-24-0x000000006A2D0000-0x000000006A9BE000-memory.dmp

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memory/1340-25-0x0000000000A20000-0x0000000000A21000-memory.dmp

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memory/1340-37-0x0000000006120000-0x0000000006121000-memory.dmp

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memory/1340-27-0x0000000002630000-0x0000000002631000-memory.dmp

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memory/1340-28-0x0000000002810000-0x0000000002811000-memory.dmp

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memory/1340-31-0x0000000005FE0000-0x0000000005FE1000-memory.dmp

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memory/1680-14-0x0000000000400000-0x0000000000488000-memory.dmp

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memory/1680-19-0x000000006A2D0000-0x000000006A9BE000-memory.dmp

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memory/1680-18-0x0000000000400000-0x0000000000488000-memory.dmp

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memory/1680-17-0x0000000000400000-0x0000000000488000-memory.dmp

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memory/1724-3-0x000007FEF72E0000-0x000007FEF755A000-memory.dmp

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