masslogger | f850f8dbc4d481d6fe6357e4ecc67d2a576542a63c3ff3561b55905fa5e0786b

General

Target

f850f8dbc4d481d6fe6357e4ecc67d2a576542a63c3ff3561b55905fa5e0786b.exe
Size

818KB
MD5

72159f6de42ef2d65fee42a31bbbfcee
SHA1

0fa0a3ec1f1772cba492316866f578c5db09adbd
SHA256

f850f8dbc4d481d6fe6357e4ecc67d2a576542a63c3ff3561b55905fa5e0786b
SHA512

5daea2a9995b9330cd17a2c4676c6aa8eacf18f15f54919b406fdccc1bcbfc74f24ac3656c24dc33734db7e62a022448b767e626ca7faa6a31a4026b29852534

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/2328-138-0x0000000000400000-0x0000000000486000-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	f850f8dbc4d481d6fe6357e4ecc67d2a576542a63c3ff3561b55905fa5e0786b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	f850f8dbc4d481d6fe6357e4ecc67d2a576542a63c3ff3561b55905fa5e0786b.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	f850f8dbc4d481d6fe6357e4ecc67d2a576542a63c3ff3561b55905fa5e0786b.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	f850f8dbc4d481d6fe6357e4ecc67d2a576542a63c3ff3561b55905fa5e0786b.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2424 set thread context of 2328	2424	f850f8dbc4d481d6fe6357e4ecc67d2a576542a63c3ff3561b55905fa5e0786b.exe	81

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2328	f850f8dbc4d481d6fe6357e4ecc67d2a576542a63c3ff3561b55905fa5e0786b.exe
2328	f850f8dbc4d481d6fe6357e4ecc67d2a576542a63c3ff3561b55905fa5e0786b.exe
3676	powershell.exe
3676	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2328	f850f8dbc4d481d6fe6357e4ecc67d2a576542a63c3ff3561b55905fa5e0786b.exe
Token: SeDebugPrivilege	3676	powershell.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2424 wrote to memory of 2328	2424	f850f8dbc4d481d6fe6357e4ecc67d2a576542a63c3ff3561b55905fa5e0786b.exe	81
PID 2424 wrote to memory of 2328	2424	f850f8dbc4d481d6fe6357e4ecc67d2a576542a63c3ff3561b55905fa5e0786b.exe	81
PID 2424 wrote to memory of 2328	2424	f850f8dbc4d481d6fe6357e4ecc67d2a576542a63c3ff3561b55905fa5e0786b.exe	81
PID 2424 wrote to memory of 2328	2424	f850f8dbc4d481d6fe6357e4ecc67d2a576542a63c3ff3561b55905fa5e0786b.exe	81
PID 2424 wrote to memory of 2328	2424	f850f8dbc4d481d6fe6357e4ecc67d2a576542a63c3ff3561b55905fa5e0786b.exe	81
PID 2424 wrote to memory of 2328	2424	f850f8dbc4d481d6fe6357e4ecc67d2a576542a63c3ff3561b55905fa5e0786b.exe	81
PID 2424 wrote to memory of 2328	2424	f850f8dbc4d481d6fe6357e4ecc67d2a576542a63c3ff3561b55905fa5e0786b.exe	81
PID 2424 wrote to memory of 2328	2424	f850f8dbc4d481d6fe6357e4ecc67d2a576542a63c3ff3561b55905fa5e0786b.exe	81
PID 2328 wrote to memory of 3676	2328	f850f8dbc4d481d6fe6357e4ecc67d2a576542a63c3ff3561b55905fa5e0786b.exe	82
PID 2328 wrote to memory of 3676	2328	f850f8dbc4d481d6fe6357e4ecc67d2a576542a63c3ff3561b55905fa5e0786b.exe	82
PID 2328 wrote to memory of 3676	2328	f850f8dbc4d481d6fe6357e4ecc67d2a576542a63c3ff3561b55905fa5e0786b.exe	82

C:\Users\Admin\AppData\Local\Temp\f850f8dbc4d481d6fe6357e4ecc67d2a576542a63c3ff3561b55905fa5e0786b.exe
"C:\Users\Admin\AppData\Local\Temp\f850f8dbc4d481d6fe6357e4ecc67d2a576542a63c3ff3561b55905fa5e0786b.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2424
- C:\Users\Admin\AppData\Local\Temp\f850f8dbc4d481d6fe6357e4ecc67d2a576542a63c3ff3561b55905fa5e0786b.exe
  "{path}"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2328
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "powershell" Start-Sleep -Seconds 2; Remove-Item -path 'C:\Users\Admin\AppData\Local\Temp\f850f8dbc4d481d6fe6357e4ecc67d2a576542a63c3ff3561b55905fa5e0786b.exe'
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3676

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\f850f8dbc4d481d6fe6357e4ecc67d2a576542a63c3ff3561b55905fa5e0786b.exe.log

Filesize
1KB

MD5
ddde88120da5a6e61cf1c0d1fc3f5c99

SHA1
aef94de11f90c3e6a99478c03d24aa355a6d0e52

SHA256
353067996dbacb8d3ae38dcc754d06b92e34b8511ebe2fda8c2358bbf6b79924

SHA512
64994ad92b4751bf3d580ec683e9387d9f05fe44bcb80c343470e992ac793f94f4811ab7c4f2e7240d40d5fe49df8191b781ef994a7c30df1f80940c7b06e8bd

Download Submit
memory/2328-138-0x0000000000400000-0x0000000000486000-memory.dmp

Filesize
536KB

Download
memory/2424-130-0x0000000000180000-0x0000000000252000-memory.dmp

Filesize
840KB

Download
memory/2424-131-0x0000000005280000-0x0000000005824000-memory.dmp

Filesize
5.6MB

Download
memory/2424-132-0x0000000004BF0000-0x0000000004C82000-memory.dmp

Filesize
584KB

Download
memory/2424-133-0x0000000004CB0000-0x0000000004CBA000-memory.dmp

Filesize
40KB

Download
memory/2424-134-0x0000000005D60000-0x000000000628C000-memory.dmp

Filesize
5.2MB

Download
memory/2424-135-0x0000000006470000-0x000000000650C000-memory.dmp

Filesize
624KB

Download
memory/2424-136-0x0000000006680000-0x00000000066E6000-memory.dmp

Filesize
408KB

Download
memory/3676-141-0x0000000003050000-0x0000000003086000-memory.dmp

Filesize
216KB

Download
memory/3676-142-0x0000000005CE0000-0x0000000006308000-memory.dmp

Filesize
6.2MB

Download
memory/3676-143-0x0000000005AE0000-0x0000000005B02000-memory.dmp

Filesize
136KB

Download
memory/3676-144-0x0000000005B80000-0x0000000005BE6000-memory.dmp

Filesize
408KB

Download
memory/3676-145-0x0000000006990000-0x00000000069AE000-memory.dmp

Filesize
120KB

Download
memory/3676-146-0x00000000081F0000-0x000000000886A000-memory.dmp

Filesize
6.5MB

Download
memory/3676-147-0x0000000006E90000-0x0000000006EAA000-memory.dmp

Filesize
104KB

Download
memory/3676-148-0x00000000056A5000-0x00000000056A7000-memory.dmp

Filesize
8KB

Download
memory/3676-149-0x0000000007C10000-0x0000000007CA6000-memory.dmp

Filesize
600KB

Download
memory/3676-150-0x0000000006F50000-0x0000000006F72000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads