masslogger | 1db6bb9de6a05bd4f6f7099a2494124e3ba4cd2571ca39d2cb316fa42d6eb98e

Analysis

max time kernel
79s
max time network
47s
platform
windows7_x64
resource
win7-20220414-en
submitted
21-05-2022 11:40

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General

Target

HALKBANK.exe
Size

2.6MB
MD5

0dc79297559b6ff6a2db2870c4de1313
SHA1

ed43611311d5a94ce56a5fff8e45a8ac437fbf12
SHA256

16fcaf343d6c5ec3c546339a522c47b7e44f0684ff50a7acf49d8439e2956a93
SHA512

c3afb996357edb3c6d006476768a3354d629eb29ff345d64098369cad19753a50a7eefe28fc53e8f4841cc7a006b2fa43cb906a65852cab91525c2be1a161a1b

Score

10^/10

masslogger persistence 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 7 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1708-54-0x00000000008B0000-0x0000000000B56000-memory.dmp	family_masslogger
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\firefoxx.exe	family_masslogger
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\firefoxx.exe	family_masslogger
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\firefoxx.exe	family_masslogger
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\firefoxx.exe	family_masslogger
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\firefoxx.exe	family_masslogger
behavioral1/memory/1724-102-0x0000000001100000-0x00000000013A6000-memory.dmp	family_masslogger

Executes dropped EXE 3 IoCs

Processes:

RegAsm.exefirefoxx.exefirefoxx.exe

pid process

2044 RegAsm.exe
1724 firefoxx.exe
1696 firefoxx.exe
Loads dropped DLL 4 IoCs

Processes:

HALKBANK.exeRegAsm.exe

pid process

1708 HALKBANK.exe
2044 RegAsm.exe
2044 RegAsm.exe
1708 HALKBANK.exe

pid	process
2044	RegAsm.exe
1724	firefoxx.exe
1696	firefoxx.exe

pid	process
1708	HALKBANK.exe
2044	RegAsm.exe
2044	RegAsm.exe
1708	HALKBANK.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

reg.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows\CurrentVersion\Run\firefoxx = "C:\\Windows\\system32\\pcalua.exe -a C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\firefoxx.exe"	reg.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

HALKBANK.exe

description pid process target process

PID 1708 set thread context of 2044 1708 HALKBANK.exe RegAsm.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

HALKBANK.exeRegAsm.exefirefoxx.exefirefoxx.exe

pid process

1708 HALKBANK.exe
1708 HALKBANK.exe
1708 HALKBANK.exe
2044 RegAsm.exe
1708 HALKBANK.exe
2044 RegAsm.exe
1724 firefoxx.exe
1696 firefoxx.exe

description	pid	process	target process
PID 1708 set thread context of 2044	1708	HALKBANK.exe	RegAsm.exe

pid	process
1708	HALKBANK.exe
1708	HALKBANK.exe
1708	HALKBANK.exe
2044	RegAsm.exe
1708	HALKBANK.exe
2044	RegAsm.exe
1724	firefoxx.exe
1696	firefoxx.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

HALKBANK.exeRegAsm.exefirefoxx.exefirefoxx.exe

description	pid	process
Token: SeDebugPrivilege	1708	HALKBANK.exe
Token: SeDebugPrivilege	2044	RegAsm.exe
Token: SeDebugPrivilege	1724	firefoxx.exe
Token: SeDebugPrivilege	1696	firefoxx.exe

Suspicious use of WriteProcessMemory 28 IoCs

Processes:

HALKBANK.execmd.exeRegAsm.exe

description	pid	process	target process
PID 1708 wrote to memory of 2044	1708	HALKBANK.exe	RegAsm.exe
PID 1708 wrote to memory of 2044	1708	HALKBANK.exe	RegAsm.exe
PID 1708 wrote to memory of 2044	1708	HALKBANK.exe	RegAsm.exe
PID 1708 wrote to memory of 2044	1708	HALKBANK.exe	RegAsm.exe
PID 1708 wrote to memory of 2044	1708	HALKBANK.exe	RegAsm.exe
PID 1708 wrote to memory of 2044	1708	HALKBANK.exe	RegAsm.exe
PID 1708 wrote to memory of 2044	1708	HALKBANK.exe	RegAsm.exe
PID 1708 wrote to memory of 2044	1708	HALKBANK.exe	RegAsm.exe
PID 1708 wrote to memory of 2044	1708	HALKBANK.exe	RegAsm.exe
PID 1708 wrote to memory of 2044	1708	HALKBANK.exe	RegAsm.exe
PID 1708 wrote to memory of 2044	1708	HALKBANK.exe	RegAsm.exe
PID 1708 wrote to memory of 2044	1708	HALKBANK.exe	RegAsm.exe
PID 1708 wrote to memory of 1632	1708	HALKBANK.exe	cmd.exe
PID 1708 wrote to memory of 1632	1708	HALKBANK.exe	cmd.exe
PID 1708 wrote to memory of 1632	1708	HALKBANK.exe	cmd.exe
PID 1708 wrote to memory of 1632	1708	HALKBANK.exe	cmd.exe
PID 1632 wrote to memory of 520	1632	cmd.exe	reg.exe
PID 1632 wrote to memory of 520	1632	cmd.exe	reg.exe
PID 1632 wrote to memory of 520	1632	cmd.exe	reg.exe
PID 1632 wrote to memory of 520	1632	cmd.exe	reg.exe
PID 2044 wrote to memory of 1724	2044	RegAsm.exe	firefoxx.exe
PID 2044 wrote to memory of 1724	2044	RegAsm.exe	firefoxx.exe
PID 2044 wrote to memory of 1724	2044	RegAsm.exe	firefoxx.exe
PID 2044 wrote to memory of 1724	2044	RegAsm.exe	firefoxx.exe
PID 1708 wrote to memory of 1696	1708	HALKBANK.exe	firefoxx.exe
PID 1708 wrote to memory of 1696	1708	HALKBANK.exe	firefoxx.exe
PID 1708 wrote to memory of 1696	1708	HALKBANK.exe	firefoxx.exe
PID 1708 wrote to memory of 1696	1708	HALKBANK.exe	firefoxx.exe

C:\Users\Admin\AppData\Local\Temp\HALKBANK.exe
"C:\Users\Admin\AppData\Local\Temp\HALKBANK.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1708
- C:\Users\Admin\AppData\Local\Temp\RegAsm.exe
  "C:\Users\Admin\AppData\Local\Temp\RegAsm.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2044
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\firefoxx.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\firefoxx.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1724
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v firefoxx /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\firefoxx.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1632
- - C:\Windows\SysWOW64\reg.exe
    REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v firefoxx /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\firefoxx.exe"
    3⤵
    - Adds Run key to start application
    PID:520
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\firefoxx.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\firefoxx.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1696

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\RegAsm.exe

Filesize
63KB

MD5
b58b926c3574d28d5b7fdd2ca3ec30d5

SHA1
d260c4ffd603a9cfc057fcb83d678b1cecdf86f9

SHA256
6e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3

SHA512
b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab

Download Submit
C:\Users\Admin\AppData\Local\Temp\RegAsm.exe

Filesize
63KB

MD5
b58b926c3574d28d5b7fdd2ca3ec30d5

SHA1
d260c4ffd603a9cfc057fcb83d678b1cecdf86f9

SHA256
6e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3

SHA512
b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\firefoxx.exe

Filesize
2.6MB

MD5
0dc79297559b6ff6a2db2870c4de1313

SHA1
ed43611311d5a94ce56a5fff8e45a8ac437fbf12

SHA256
16fcaf343d6c5ec3c546339a522c47b7e44f0684ff50a7acf49d8439e2956a93

SHA512
c3afb996357edb3c6d006476768a3354d629eb29ff345d64098369cad19753a50a7eefe28fc53e8f4841cc7a006b2fa43cb906a65852cab91525c2be1a161a1b

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\firefoxx.exe

Filesize
2.6MB

MD5
0dc79297559b6ff6a2db2870c4de1313

SHA1
ed43611311d5a94ce56a5fff8e45a8ac437fbf12

SHA256
16fcaf343d6c5ec3c546339a522c47b7e44f0684ff50a7acf49d8439e2956a93

SHA512
c3afb996357edb3c6d006476768a3354d629eb29ff345d64098369cad19753a50a7eefe28fc53e8f4841cc7a006b2fa43cb906a65852cab91525c2be1a161a1b

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\firefoxx.exe

Filesize
2.6MB

MD5
0dc79297559b6ff6a2db2870c4de1313

SHA1
ed43611311d5a94ce56a5fff8e45a8ac437fbf12

SHA256
16fcaf343d6c5ec3c546339a522c47b7e44f0684ff50a7acf49d8439e2956a93

SHA512
c3afb996357edb3c6d006476768a3354d629eb29ff345d64098369cad19753a50a7eefe28fc53e8f4841cc7a006b2fa43cb906a65852cab91525c2be1a161a1b

Download Submit
\Users\Admin\AppData\Local\Temp\RegAsm.exe

Filesize
63KB

MD5
b58b926c3574d28d5b7fdd2ca3ec30d5

SHA1
d260c4ffd603a9cfc057fcb83d678b1cecdf86f9

SHA256
6e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3

SHA512
b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab

Download Submit
\Users\Admin\AppData\Local\Temp\RegAsm.exe

Filesize
63KB

MD5
b58b926c3574d28d5b7fdd2ca3ec30d5

SHA1
d260c4ffd603a9cfc057fcb83d678b1cecdf86f9

SHA256
6e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3

SHA512
b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\firefoxx.exe

Filesize
2.6MB

MD5
0dc79297559b6ff6a2db2870c4de1313

SHA1
ed43611311d5a94ce56a5fff8e45a8ac437fbf12

SHA256
16fcaf343d6c5ec3c546339a522c47b7e44f0684ff50a7acf49d8439e2956a93

SHA512
c3afb996357edb3c6d006476768a3354d629eb29ff345d64098369cad19753a50a7eefe28fc53e8f4841cc7a006b2fa43cb906a65852cab91525c2be1a161a1b

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\firefoxx.exe

Filesize
2.6MB

MD5
0dc79297559b6ff6a2db2870c4de1313

SHA1
ed43611311d5a94ce56a5fff8e45a8ac437fbf12

SHA256
16fcaf343d6c5ec3c546339a522c47b7e44f0684ff50a7acf49d8439e2956a93

SHA512
c3afb996357edb3c6d006476768a3354d629eb29ff345d64098369cad19753a50a7eefe28fc53e8f4841cc7a006b2fa43cb906a65852cab91525c2be1a161a1b

Download Submit
memory/520-74-0x0000000000000000-mapping.dmp

Download
memory/1632-73-0x0000000000000000-mapping.dmp

Download
memory/1696-99-0x0000000000000000-mapping.dmp

Download
memory/1708-54-0x00000000008B0000-0x0000000000B56000-memory.dmp

Filesize
2.6MB

Download
memory/1708-56-0x0000000000BD0000-0x0000000000BD8000-memory.dmp

Filesize
32KB

Download
memory/1708-55-0x00000000008A0000-0x00000000008AA000-memory.dmp

Filesize
40KB

Download
memory/1724-98-0x0000000000000000-mapping.dmp

Download
memory/1724-102-0x0000000001100000-0x00000000013A6000-memory.dmp

Filesize
2.6MB

Download
memory/2044-64-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download
memory/2044-83-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download
memory/2044-85-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download
memory/2044-87-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download
memory/2044-88-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download
memory/2044-91-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download
memory/2044-92-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download
memory/2044-94-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download
memory/2044-72-0x00000000763E1000-0x00000000763E3000-memory.dmp

Filesize
8KB

Download
memory/2044-70-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download
memory/2044-68-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download
memory/2044-65-0x00000000004A8CAE-mapping.dmp

Download
memory/2044-63-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download
memory/2044-59-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download
memory/2044-61-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download
memory/2044-58-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download