masslogger | f68c119b9e5b1365aa6f9b333e5222f7d35c6a67c3ac6a2f0fea4a7e5d04c726

Analysis

max time kernel
127s
max time network
131s
platform
windows7_x64
resource
win7-20220414-en
submitted
21-05-2022 01:35

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General

Target

DHL Document.exe
Size

877KB
MD5

8667413de7acc939e5157862390e49ca
SHA1

e09365296e8bcb1d1842032d3e31d2b6e880a75e
SHA256

d2aba15a355f2587296a0d3de5416fe3ad7a644aaf39e9b8c5be0125a346abc6
SHA512

0e64a10bd8925cc5f4be46c2d9ee4f0d5dac8e482ff86b5658d198ed7b30732e138e2b48e5a136d6269b8ee4c357e6454b31d184402c0477ac2985180c02ba3a

Score

10^/10

masslogger collection coreentity rezer0 spyware stealer

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
mail.privateemail.com
Port:
587
Username:
[email protected]
Password:
1234567890

Signatures

CoreEntity .NET Packer 1 IoCs

A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

coreentity

Processes:

resource	yara_rule
behavioral1/memory/1080-56-0x00000000003C0000-0x00000000003C8000-memory.dmp	coreentity

MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
stealer spyware masslogger
MassLogger log file 1 IoCs
Detects a log file produced by MassLogger.

Processes:

yara_rule

masslogger_log_file

yara_rule
masslogger_log_file

ReZer0 packer 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1080-57-0x0000000005C20000-0x0000000005CCE000-memory.dmp	rezer0

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

Processes:

DHL Document.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Control Panel\International\Geo\Nation	DHL Document.exe

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

Data from Local System
T1005

Credentials in Files
T1081

Accesses Microsoft Outlook profiles 1 TTPs 15 IoCs

collection

Email Collection

T1114

Processes:

DHL Document.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	DHL Document.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	DHL Document.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	DHL Document.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	DHL Document.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	DHL Document.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	DHL Document.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	DHL Document.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	DHL Document.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	DHL Document.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	DHL Document.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	DHL Document.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	DHL Document.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	DHL Document.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	DHL Document.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	DHL Document.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

DHL Document.exe

description pid process target process

PID 1080 set thread context of 1572 1080 DHL Document.exe DHL Document.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
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

Processes:

schtasks.exe

pid process

956 schtasks.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

DHL Document.exe

pid process

1572 DHL Document.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

DHL Document.exe

pid process

1572 DHL Document.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

DHL Document.exe

description pid process

Token: SeDebugPrivilege 1572 DHL Document.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

DHL Document.exe

pid process

1572 DHL Document.exe

description	pid	process	target process
PID 1080 set thread context of 1572	1080	DHL Document.exe	DHL Document.exe

pid	process
956	schtasks.exe

pid	process
1572	DHL Document.exe

pid	process
1572	DHL Document.exe

description	pid	process
Token: SeDebugPrivilege	1572	DHL Document.exe

pid	process
1572	DHL Document.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

DHL Document.exe

description	pid	process	target process
PID 1080 wrote to memory of 956	1080	DHL Document.exe	schtasks.exe
PID 1080 wrote to memory of 956	1080	DHL Document.exe	schtasks.exe
PID 1080 wrote to memory of 956	1080	DHL Document.exe	schtasks.exe
PID 1080 wrote to memory of 956	1080	DHL Document.exe	schtasks.exe
PID 1080 wrote to memory of 1572	1080	DHL Document.exe	DHL Document.exe
PID 1080 wrote to memory of 1572	1080	DHL Document.exe	DHL Document.exe
PID 1080 wrote to memory of 1572	1080	DHL Document.exe	DHL Document.exe
PID 1080 wrote to memory of 1572	1080	DHL Document.exe	DHL Document.exe
PID 1080 wrote to memory of 1572	1080	DHL Document.exe	DHL Document.exe
PID 1080 wrote to memory of 1572	1080	DHL Document.exe	DHL Document.exe
PID 1080 wrote to memory of 1572	1080	DHL Document.exe	DHL Document.exe
PID 1080 wrote to memory of 1572	1080	DHL Document.exe	DHL Document.exe
PID 1080 wrote to memory of 1572	1080	DHL Document.exe	DHL Document.exe

outlook_office_path 1 IoCs

Processes:

DHL Document.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	DHL Document.exe

outlook_win_path 1 IoCs

Processes:

DHL Document.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	DHL Document.exe

C:\Users\Admin\AppData\Local\Temp\DHL Document.exe
"C:\Users\Admin\AppData\Local\Temp\DHL Document.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1080
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HxFYXTStYv" /XML "C:\Users\Admin\AppData\Local\Temp\tmp14BA.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:956
- C:\Users\Admin\AppData\Local\Temp\DHL Document.exe
  "{path}"
  2⤵
  - Checks computer location settings
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:1572

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

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp14BA.tmp

Filesize
1KB

MD5
d8d3288744cd8babdbdaba85b18e9a21

SHA1
004a35351ce566575e265a5a35fd363364075049

SHA256
ef6626b40b1317965fc4272b7fe636828fb670dcc89b29a1879add3d8cb0bec2

SHA512
b8c5ade2a46c978502795e904790f7b6e24d355f9f8d896bad9b1cbfbf63dab669ce5bcd8cad063f6c34cdf8097225b1dbfcb95b6df92d2031811394f82b8074

Download Submit
memory/956-58-0x0000000000000000-mapping.dmp

Download
memory/1080-54-0x0000000000B50000-0x0000000000C32000-memory.dmp

Filesize
904KB

Download
memory/1080-55-0x00000000755C1000-0x00000000755C3000-memory.dmp

Filesize
8KB

Download
memory/1080-56-0x00000000003C0000-0x00000000003C8000-memory.dmp

Filesize
32KB

Download
memory/1080-57-0x0000000005C20000-0x0000000005CCE000-memory.dmp

Filesize
696KB

Download
memory/1572-84-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1572-90-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1572-63-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1572-64-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1572-65-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1572-66-0x00000000004A14BE-mapping.dmp

Download
memory/1572-68-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1572-70-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1572-72-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1572-74-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1572-76-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1572-78-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1572-80-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1572-82-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1572-60-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1572-86-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1572-88-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1572-61-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1572-92-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1572-94-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1572-96-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1572-98-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1572-100-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1572-102-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1572-104-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1572-106-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1572-108-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1572-110-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1572-112-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1572-114-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1572-116-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1572-118-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1572-120-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1572-122-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1572-570-0x00000000004D0000-0x0000000000514000-memory.dmp

Filesize
272KB

Download