masslogger | 19016227bbad1d388ed7c0ad968a882e7e7702457257426931f6d6005eea5472

Analysis

max time kernel
69s
max time network
120s
platform
windows7_x64
resource
win7v20201028
submitted
17/12/2020, 08:22

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
5 days Itinerery.doc
Size 525KB
Sample201217-dfs8g7klxe
SHA256 19016227bbad1d388ed7c0ad968a882e7e7702457257426931f6d6005eea5472
MD5 3e61c3fcfbce2d0100a3b4c8fcbdb945
SHA1 6f6673ab5b88a1f3f9b651026957c3a333657040
SHA512 1f2570e4e1c306c885adaac8e3103f0f7f127641ed9d49d2f5d96d151f80d1a5e591b592f098cf3b19b80da7512df5c8d092c031e95cd7c1e6cba4dbc4d5cd98
MD5 SHA1 SHA512

Score

10^/10

masslogger ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\5FADD7138A\Log.txt

masslogger

Ransom Note

<|| v2.1.0.0 ||> User Name: Admin IP: 154.61.71.51 Location: United States Windows OS: Microsoft Windows 7 Ultimate 64bit Windows Serial Key: HYF8J-CVRMY-CM74G-RPHKF-PW487 CPU: Persocon Processor 2.5+ GPU: Standard VGA Graphics Adapter AV: NA Screen Resolution: 1280x720 Current Time: 12/17/2020 8:18:58 AM MassLogger Started: 12/17/2020 8:18:53 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Roaming\KDO.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: Name:WerFault, Title:KDO.exe Name:WINWORD, Title:Opening - Microsoft Word <|| WD Exclusion ||> Disabled <|| Binder ||> Disabled <|| USB Spread ||> Disabled <|| Downloader ||> Disabled <|| Window Searcher ||> Disabled <|| Bot Killer ||> Disabled <|| Search And Upload ||> Disabled <|| Telegram Desktop ||> Not Installed <|| Pidgin ||> Not Installed <|| FileZilla ||> Not Installed <|| Discord Tokken ||> Not Installed <|| NordVPN ||> Not Installed <|| Outlook ||> Not Installed <|| FoxMail ||> Not Installed <|| Thunderbird ||> Not Installed <|| FireFox ||> Not Found <|| QQ Browser ||> Not Installed <|| Chromium Recovery ||> Not Installed or Not Found <|| Keylogger And Clipboard ||> NA

Signatures

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

MassLogger Main Payload 14 IoCs

resource	yara_rule
behavioral1/memory/1208-15-0x00000000004941AE-mapping.dmp	family_masslogger
behavioral1/memory/1208-14-0x0000000000400000-0x000000000049A000-memory.dmp	family_masslogger
behavioral1/memory/1208-18-0x0000000000400000-0x000000000049A000-memory.dmp	family_masslogger
behavioral1/memory/1208-17-0x0000000000400000-0x000000000049A000-memory.dmp	family_masslogger
behavioral1/memory/1296-28-0x0000000000000000-mapping.dmp	family_masslogger
behavioral1/memory/1296-27-0x0000000000000000-mapping.dmp	family_masslogger
behavioral1/memory/1296-37-0x0000000000000000-mapping.dmp	family_masslogger
behavioral1/memory/1296-36-0x0000000000000000-mapping.dmp	family_masslogger
behavioral1/memory/1296-34-0x0000000000000000-mapping.dmp	family_masslogger
behavioral1/memory/1296-32-0x0000000000000000-mapping.dmp	family_masslogger
behavioral1/memory/1296-31-0x0000000000000000-mapping.dmp	family_masslogger
behavioral1/memory/1296-30-0x0000000000000000-mapping.dmp	family_masslogger
behavioral1/memory/1296-29-0x0000000000000000-mapping.dmp	family_masslogger
behavioral1/memory/1296-38-0x0000000000000000-mapping.dmp	family_masslogger

MassLogger log file 1 IoCs

Detects a log file produced by MassLogger.

yara_rule
masslogger_log_file

ServiceHost packer 12 IoCs

Detects ServiceHost packer used for .NET malware

resource	yara_rule
behavioral1/memory/1296-28-0x0000000000000000-mapping.dmp	servicehost
behavioral1/memory/1296-27-0x0000000000000000-mapping.dmp	servicehost
behavioral1/memory/1296-35-0x0000000000000000-mapping.dmp	servicehost
behavioral1/memory/1296-37-0x0000000000000000-mapping.dmp	servicehost
behavioral1/memory/1296-36-0x0000000000000000-mapping.dmp	servicehost
behavioral1/memory/1296-34-0x0000000000000000-mapping.dmp	servicehost
behavioral1/memory/1296-33-0x0000000000000000-mapping.dmp	servicehost
behavioral1/memory/1296-32-0x0000000000000000-mapping.dmp	servicehost
behavioral1/memory/1296-31-0x0000000000000000-mapping.dmp	servicehost
behavioral1/memory/1296-30-0x0000000000000000-mapping.dmp	servicehost
behavioral1/memory/1296-29-0x0000000000000000-mapping.dmp	servicehost
behavioral1/memory/1296-38-0x0000000000000000-mapping.dmp	servicehost

Blocklisted process makes network request 1 IoCs

flow	pid	Process
6	1932	EQNEDT32.EXE

Executes dropped EXE 2 IoCs

pid	Process
1296	KDO.exe
1208	KDO.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	KDO.exe

Loads dropped DLL 5 IoCs

pid	Process
1932	EQNEDT32.EXE
1932	EQNEDT32.EXE
1672	WerFault.exe
1672	WerFault.exe
1672	WerFault.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
9	api.ipify.org

Suspicious use of NtSetInformationThreadHideFromDebugger 12 IoCs

pid	Process
1296	KDO.exe
1296	KDO.exe
1296	KDO.exe
1296	KDO.exe
1296	KDO.exe
1296	KDO.exe
1296	KDO.exe
1296	KDO.exe
1296	KDO.exe
1296	KDO.exe
1296	KDO.exe
1296	KDO.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1296 set thread context of 1208	1296	KDO.exe	36

Drops file in Windows directory 1 IoCs

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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1672	1296	WerFault.exe	32

Office loads VBA resources, possible macro or embedded object present

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
520	timeout.exe

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
1932	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
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
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 (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
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\E&xport to Microsoft Excel\Contexts = "1"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
1580	WINWORD.EXE
1208	KDO.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
1296	KDO.exe
1296	KDO.exe
1296	KDO.exe
1672	WerFault.exe
1672	WerFault.exe
1672	WerFault.exe
1672	WerFault.exe
1672	WerFault.exe
1208	KDO.exe
1208	KDO.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1296	KDO.exe
Token: SeDebugPrivilege	1672	WerFault.exe
Token: SeDebugPrivilege	1208	KDO.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1580	WINWORD.EXE
1580	WINWORD.EXE

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1580	WINWORD.EXE
1580	WINWORD.EXE
1208	KDO.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 1932 wrote to memory of 1296	1932	EQNEDT32.EXE	32
PID 1932 wrote to memory of 1296	1932	EQNEDT32.EXE	32
PID 1932 wrote to memory of 1296	1932	EQNEDT32.EXE	32
PID 1932 wrote to memory of 1296	1932	EQNEDT32.EXE	32
PID 1296 wrote to memory of 924	1296	KDO.exe	33
PID 1296 wrote to memory of 924	1296	KDO.exe	33
PID 1296 wrote to memory of 924	1296	KDO.exe	33
PID 1296 wrote to memory of 924	1296	KDO.exe	33
PID 924 wrote to memory of 520	924	cmd.exe	35
PID 924 wrote to memory of 520	924	cmd.exe	35
PID 924 wrote to memory of 520	924	cmd.exe	35
PID 924 wrote to memory of 520	924	cmd.exe	35
PID 1296 wrote to memory of 1208	1296	KDO.exe	36
PID 1296 wrote to memory of 1208	1296	KDO.exe	36
PID 1296 wrote to memory of 1208	1296	KDO.exe	36
PID 1296 wrote to memory of 1208	1296	KDO.exe	36
PID 1296 wrote to memory of 1208	1296	KDO.exe	36
PID 1296 wrote to memory of 1208	1296	KDO.exe	36
PID 1296 wrote to memory of 1208	1296	KDO.exe	36
PID 1296 wrote to memory of 1208	1296	KDO.exe	36
PID 1296 wrote to memory of 1208	1296	KDO.exe	36
PID 1296 wrote to memory of 1672	1296	KDO.exe	37
PID 1296 wrote to memory of 1672	1296	KDO.exe	37
PID 1296 wrote to memory of 1672	1296	KDO.exe	37
PID 1296 wrote to memory of 1672	1296	KDO.exe	37
PID 1580 wrote to memory of 1980	1580	WINWORD.EXE	41
PID 1580 wrote to memory of 1980	1580	WINWORD.EXE	41
PID 1580 wrote to memory of 1980	1580	WINWORD.EXE	41
PID 1580 wrote to memory of 1980	1580	WINWORD.EXE	41

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\5 days Itinerery.doc"
1⤵
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1580
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:1980

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:1932
- C:\Users\Admin\AppData\Roaming\KDO.exe
  C:\Users\Admin\AppData\Roaming\KDO.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1296
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c timeout 4.104
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:924
  - - C:\Windows\SysWOW64\timeout.exe
      timeout 4.104
      4⤵
      Delays execution with timeout.exe
      PID:520
- - C:\Users\Admin\AppData\Roaming\KDO.exe
    "C:\Users\Admin\AppData\Roaming\KDO.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: AddClipboardFormatListener
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:1208
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1296 -s 1632
    3⤵
    - Loads dropped DLL
    - Program crash
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1672

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

Loading Replay Monitor...

Downloads

memory/1208-26-0x0000000002110000-0x000000000214E000-memory.dmp

Download

memory/1208-41-0x0000000002160000-0x000000000216F000-memory.dmp

Download

memory/1208-14-0x0000000000400000-0x000000000049A000-memory.dmp

Download

memory/1208-18-0x0000000000400000-0x000000000049A000-memory.dmp

Download

memory/1208-17-0x0000000000400000-0x000000000049A000-memory.dmp

Download

memory/1208-19-0x000000006B630000-0x000000006BD1E000-memory.dmp

Download

memory/1296-13-0x00000000055E0000-0x0000000005681000-memory.dmp

Download

memory/1296-9-0x0000000000CF0000-0x0000000000CF1000-memory.dmp

Download

memory/1296-8-0x000000006B630000-0x000000006BD1E000-memory.dmp

Download

memory/1672-23-0x0000000001F70000-0x0000000001F81000-memory.dmp

Download

memory/1672-39-0x0000000002810000-0x0000000002821000-memory.dmp

Download

memory/2000-2-0x000007FEF6780000-0x000007FEF69FA000-memory.dmp

Download