masslogger | da5de33aa29159ce3331c060ed0da0b17346037aa12960652d67ecc7ba6d44a5

Analysis

max time kernel
120s
max time network
124s
platform
windows7_x64
resource
win7v20201028
submitted
09/11/2020, 16:17

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General

Target
PO-40, PO-41 & PO-42.exe
Size 935KB
Sample201109-abdevjpkn2
SHA256 da5de33aa29159ce3331c060ed0da0b17346037aa12960652d67ecc7ba6d44a5
MD5 0c8b526f92f2f5799c9657496bd7ddbb
SHA1 8e730ef2a840e0fb149c9ccebf80e5930489a25b
SHA512 d01d271e4a710f9c2b6c171fac9e7359bae7cc8eef783cb2f682300a8f20853319dece5741d44459860813de8c26b88ac373d7b3766aa404b201410cf7ccd1ea
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/268-8-0x0000000000400000-0x0000000000486000-memory.dmp	family_masslogger
behavioral1/memory/268-9-0x00000000004819EE-mapping.dmp	family_masslogger
behavioral1/memory/268-10-0x0000000000400000-0x0000000000486000-memory.dmp	family_masslogger
behavioral1/memory/268-11-0x0000000000400000-0x0000000000486000-memory.dmp	family_masslogger

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	PO-40, PO-41 & PO-42.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
6	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 240 set thread context of 268	240	PO-40, PO-41 & PO-42.exe	31

Creates scheduled task(s) 1 TTPs 1 IoCs

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

persistence

Scheduled Task

T1053

pid	Process
1564	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
268	PO-40, PO-41 & PO-42.exe
268	PO-40, PO-41 & PO-42.exe
268	PO-40, PO-41 & PO-42.exe
1548	powershell.exe
1548	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	268	PO-40, PO-41 & PO-42.exe
Token: SeDebugPrivilege	1548	powershell.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 240 wrote to memory of 1564	240	PO-40, PO-41 & PO-42.exe	29
PID 240 wrote to memory of 1564	240	PO-40, PO-41 & PO-42.exe	29
PID 240 wrote to memory of 1564	240	PO-40, PO-41 & PO-42.exe	29
PID 240 wrote to memory of 1564	240	PO-40, PO-41 & PO-42.exe	29
PID 240 wrote to memory of 268	240	PO-40, PO-41 & PO-42.exe	31
PID 240 wrote to memory of 268	240	PO-40, PO-41 & PO-42.exe	31
PID 240 wrote to memory of 268	240	PO-40, PO-41 & PO-42.exe	31
PID 240 wrote to memory of 268	240	PO-40, PO-41 & PO-42.exe	31
PID 240 wrote to memory of 268	240	PO-40, PO-41 & PO-42.exe	31
PID 240 wrote to memory of 268	240	PO-40, PO-41 & PO-42.exe	31
PID 240 wrote to memory of 268	240	PO-40, PO-41 & PO-42.exe	31
PID 240 wrote to memory of 268	240	PO-40, PO-41 & PO-42.exe	31
PID 240 wrote to memory of 268	240	PO-40, PO-41 & PO-42.exe	31
PID 268 wrote to memory of 1548	268	PO-40, PO-41 & PO-42.exe	33
PID 268 wrote to memory of 1548	268	PO-40, PO-41 & PO-42.exe	33
PID 268 wrote to memory of 1548	268	PO-40, PO-41 & PO-42.exe	33
PID 268 wrote to memory of 1548	268	PO-40, PO-41 & PO-42.exe	33

C:\Users\Admin\AppData\Local\Temp\PO-40, PO-41 & PO-42.exe
"C:\Users\Admin\AppData\Local\Temp\PO-40, PO-41 & PO-42.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:240
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\nwdQIbPjQucxZD" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF41F.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1564
- C:\Users\Admin\AppData\Local\Temp\PO-40, PO-41 & PO-42.exe
  "C:\Users\Admin\AppData\Local\Temp\PO-40, PO-41 & PO-42.exe"
  2⤵
  - Checks computer location settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:268
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "powershell" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\PO-40, PO-41 & PO-42.exe'
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1548

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

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

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Downloads

memory/240-1-0x00000000013D0000-0x00000000013D1000-memory.dmp

Download

memory/240-3-0x0000000000820000-0x000000000082B000-memory.dmp

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memory/240-4-0x0000000005660000-0x0000000005718000-memory.dmp

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memory/240-5-0x0000000005080000-0x0000000005103000-memory.dmp

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memory/240-0-0x0000000074120000-0x000000007480E000-memory.dmp

Download

memory/268-12-0x00000000734A0000-0x0000000073B8E000-memory.dmp

Download

memory/268-8-0x0000000000400000-0x0000000000486000-memory.dmp

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memory/268-10-0x0000000000400000-0x0000000000486000-memory.dmp

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memory/268-11-0x0000000000400000-0x0000000000486000-memory.dmp

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memory/1548-23-0x00000000056B0000-0x00000000056B1000-memory.dmp

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memory/1548-16-0x00000000734A0000-0x0000000073B8E000-memory.dmp

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memory/1548-17-0x00000000009E0000-0x00000000009E1000-memory.dmp

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memory/1548-18-0x00000000047B0000-0x00000000047B1000-memory.dmp

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memory/1548-19-0x0000000002590000-0x0000000002591000-memory.dmp

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memory/1548-20-0x0000000005240000-0x0000000005241000-memory.dmp

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memory/1548-52-0x0000000006310000-0x0000000006311000-memory.dmp

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memory/1548-28-0x00000000056F0000-0x00000000056F1000-memory.dmp

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memory/1548-29-0x0000000006170000-0x0000000006171000-memory.dmp

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memory/1548-36-0x0000000006280000-0x0000000006281000-memory.dmp

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memory/1548-37-0x00000000055D0000-0x00000000055D1000-memory.dmp

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memory/1548-51-0x0000000006300000-0x0000000006301000-memory.dmp

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