masslogger | 12b5b8adeb972d937a1e442c0c19059a5f2ef1f5785122c905242544b7dfab6c

General

Target

CONTRACT PO CONFIRMATION!.exe
Size

1.1MB
MD5

bacf582001e91e3393c2aef245ace9a0
SHA1

c53e68fe71b695e2c7fb6c05aedb422bf5856f7b
SHA256

4474bd1e6a8472755ccac7d31beeefa7575b8b89610b71d1d08cf95a0ca17358
SHA512

0f7f7117b8551f1f91da85bc933185b1f3729bca987471ef29ba779e328eefbc9d1d6e0cdc3183cbac674800d32eb2f3eccdc2ae28561d57bce3731b910b99cc

Score

10^/10

masslogger evasion 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 1 IoCs

resource	yara_rule
behavioral2/memory/4248-139-0x0000000000400000-0x00000000004B8000-memory.dmp	family_masslogger

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	CONTRACT PO CONFIRMATION!.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	CONTRACT PO CONFIRMATION!.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	CONTRACT PO CONFIRMATION!.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	CONTRACT PO CONFIRMATION!.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2992 set thread context of 4248	2992	CONTRACT PO CONFIRMATION!.exe	82

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2992	CONTRACT PO CONFIRMATION!.exe
2992	CONTRACT PO CONFIRMATION!.exe
4248	CONTRACT PO CONFIRMATION!.exe
4248	CONTRACT PO CONFIRMATION!.exe
4520	powershell.exe
4520	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2992	CONTRACT PO CONFIRMATION!.exe
Token: SeDebugPrivilege	4248	CONTRACT PO CONFIRMATION!.exe
Token: SeDebugPrivilege	4520	powershell.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2992 wrote to memory of 5112	2992	CONTRACT PO CONFIRMATION!.exe	81
PID 2992 wrote to memory of 5112	2992	CONTRACT PO CONFIRMATION!.exe	81
PID 2992 wrote to memory of 5112	2992	CONTRACT PO CONFIRMATION!.exe	81
PID 2992 wrote to memory of 4248	2992	CONTRACT PO CONFIRMATION!.exe	82
PID 2992 wrote to memory of 4248	2992	CONTRACT PO CONFIRMATION!.exe	82
PID 2992 wrote to memory of 4248	2992	CONTRACT PO CONFIRMATION!.exe	82
PID 2992 wrote to memory of 4248	2992	CONTRACT PO CONFIRMATION!.exe	82
PID 2992 wrote to memory of 4248	2992	CONTRACT PO CONFIRMATION!.exe	82
PID 2992 wrote to memory of 4248	2992	CONTRACT PO CONFIRMATION!.exe	82
PID 2992 wrote to memory of 4248	2992	CONTRACT PO CONFIRMATION!.exe	82
PID 2992 wrote to memory of 4248	2992	CONTRACT PO CONFIRMATION!.exe	82
PID 4248 wrote to memory of 2880	4248	CONTRACT PO CONFIRMATION!.exe	83
PID 4248 wrote to memory of 2880	4248	CONTRACT PO CONFIRMATION!.exe	83
PID 4248 wrote to memory of 2880	4248	CONTRACT PO CONFIRMATION!.exe	83
PID 2880 wrote to memory of 4520	2880	cmd.exe	85
PID 2880 wrote to memory of 4520	2880	cmd.exe	85
PID 2880 wrote to memory of 4520	2880	cmd.exe	85

C:\Users\Admin\AppData\Local\Temp\CONTRACT PO CONFIRMATION!.exe
"C:\Users\Admin\AppData\Local\Temp\CONTRACT PO CONFIRMATION!.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2992
- C:\Users\Admin\AppData\Local\Temp\CONTRACT PO CONFIRMATION!.exe
  "C:\Users\Admin\AppData\Local\Temp\CONTRACT PO CONFIRMATION!.exe"
  2⤵
  PID:5112
- C:\Users\Admin\AppData\Local\Temp\CONTRACT PO CONFIRMATION!.exe
  "C:\Users\Admin\AppData\Local\Temp\CONTRACT PO CONFIRMATION!.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4248
- - C:\Windows\SysWOW64\cmd.exe
    "cmd" /c start /b powershell Start-Sleep -Seconds 2; Remove-Item -path 'C:\Users\Admin\AppData\Local\Temp\CONTRACT PO CONFIRMATION!.exe' & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2880
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell Start-Sleep -Seconds 2; Remove-Item -path 'C:\Users\Admin\AppData\Local\Temp\CONTRACT PO CONFIRMATION!.exe'
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4520

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\CONTRACT PO CONFIRMATION!.exe.log

Filesize
1KB

MD5
5200da2e50f24d5d543c3f10674acdcb

SHA1
b574a3336839882d799c0a7f635ea238efb934ee

SHA256
d2d81c1c9d35bc66149beaa77029bee68664d8512fc1efe373180bab77d61026

SHA512
24722a7de3250a6027a411c8b79d0720554c4efd59553f54b94ab77dc21efbf3191e0912901db475f08a6e9c1855d9e9594504d80d27300097418f4384a9d9cb

Download Submit
memory/2992-135-0x00000000052F0000-0x0000000005346000-memory.dmp

Filesize
344KB

Download
memory/2992-131-0x0000000005140000-0x00000000051DC000-memory.dmp

Filesize
624KB

Download
memory/2992-134-0x00000000050D0000-0x00000000050DA000-memory.dmp

Filesize
40KB

Download
memory/2992-130-0x0000000000620000-0x0000000000740000-memory.dmp

Filesize
1.1MB

Download
memory/2992-136-0x0000000006490000-0x00000000064F6000-memory.dmp

Filesize
408KB

Download
memory/2992-133-0x0000000005250000-0x00000000052E2000-memory.dmp

Filesize
584KB

Download
memory/2992-132-0x0000000005800000-0x0000000005DA4000-memory.dmp

Filesize
5.6MB

Download
memory/4248-139-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/4520-145-0x00000000054C0000-0x00000000054E2000-memory.dmp

Filesize
136KB

Download
memory/4520-143-0x0000000002B50000-0x0000000002B86000-memory.dmp

Filesize
216KB

Download
memory/4520-144-0x0000000005670000-0x0000000005C98000-memory.dmp

Filesize
6.2MB

Download
memory/4520-146-0x0000000005CA0000-0x0000000005D06000-memory.dmp

Filesize
408KB

Download
memory/4520-147-0x00000000064E0000-0x00000000064FE000-memory.dmp

Filesize
120KB

Download
memory/4520-148-0x0000000007B30000-0x00000000081AA000-memory.dmp

Filesize
6.5MB

Download
memory/4520-149-0x00000000069C0000-0x00000000069DA000-memory.dmp

Filesize
104KB

Download
memory/4520-150-0x0000000007750000-0x00000000077E6000-memory.dmp

Filesize
600KB

Download
memory/4520-151-0x0000000006AB0000-0x0000000006AD2000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads