masslogger | 03968a3a5a7a880feefca31686fcfbed445080a0c06eda2b6d623757179b782c

General

Target

mouse_2.exe
Size

984KB
MD5

af8ab92992ccc4cc6a637953836edf93
SHA1

ac17c77cae31fdfeb618b0083285ba869baf29fc
SHA256

03968a3a5a7a880feefca31686fcfbed445080a0c06eda2b6d623757179b782c
SHA512

9dc3bdfe45f9333d62ef3b0aaf3860a9ef1e94ced02ed0437d3ac2f96b3b9aacf6e621703f13d62f356bd50dec84cc3a3dc787a8a14c9ce0ceeed9ff63c45ad2

Score

10^/10

masslogger ransomware rezer0 spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\7C372DB998\Log.txt

Family

masslogger

Ransom Note

################################################################# MassLogger v1.3.7.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.13 Location: United States Windows OS: Microsoft Windows 10 Pro64bit Windows Serial Key: W269N-WFGWX-YVC9B-4J6C9-T83GX CPU: Persocon Processor 2.5+ GPU: Microsoft Basic Display Adapter AV: NA Screen Resolution: 1280x720 Current Time: 11/16/2020 9:54:32 AM MassLogger Started: 11/16/2020 9:54:27 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\mouse_2.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

Signatures

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

MassLogger Main Payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2304-12-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral2/memory/2304-13-0x00000000004A2B3E-mapping.dmp	family_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 1 IoCs

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

rezer0

Processes:

resource	yara_rule
behavioral2/memory/1628-9-0x00000000054D0000-0x0000000005579000-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:

mouse_2.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Control Panel\International\Geo\Nation	mouse_2.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.

Processes:

flow ioc

15 api.ipify.org
Suspicious use of SetThreadContext 1 IoCs

Processes:

mouse_2.exe

description pid process target process

PID 1628 set thread context of 2304 1628 mouse_2.exe mouse_2.exe
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

2792 schtasks.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

mouse_2.exe

pid process

2304 mouse_2.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

mouse_2.exemouse_2.exe

pid process

1628 mouse_2.exe
1628 mouse_2.exe
1628 mouse_2.exe
2304 mouse_2.exe
2304 mouse_2.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

mouse_2.exemouse_2.exe

description pid process

Token: SeDebugPrivilege 1628 mouse_2.exe
Token: SeDebugPrivilege 2304 mouse_2.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

mouse_2.exe

pid process

2304 mouse_2.exe

flow	ioc
15	api.ipify.org

description	pid	process	target process
PID 1628 set thread context of 2304	1628	mouse_2.exe	mouse_2.exe

pid	process
2792	schtasks.exe

pid	process
2304	mouse_2.exe

pid	process
1628	mouse_2.exe
1628	mouse_2.exe
1628	mouse_2.exe
2304	mouse_2.exe
2304	mouse_2.exe

description	pid	process
Token: SeDebugPrivilege	1628	mouse_2.exe
Token: SeDebugPrivilege	2304	mouse_2.exe

pid	process
2304	mouse_2.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

mouse_2.exe

description	pid	process	target process
PID 1628 wrote to memory of 2792	1628	mouse_2.exe	schtasks.exe
PID 1628 wrote to memory of 2792	1628	mouse_2.exe	schtasks.exe
PID 1628 wrote to memory of 2792	1628	mouse_2.exe	schtasks.exe
PID 1628 wrote to memory of 2304	1628	mouse_2.exe	mouse_2.exe
PID 1628 wrote to memory of 2304	1628	mouse_2.exe	mouse_2.exe
PID 1628 wrote to memory of 2304	1628	mouse_2.exe	mouse_2.exe
PID 1628 wrote to memory of 2304	1628	mouse_2.exe	mouse_2.exe
PID 1628 wrote to memory of 2304	1628	mouse_2.exe	mouse_2.exe
PID 1628 wrote to memory of 2304	1628	mouse_2.exe	mouse_2.exe
PID 1628 wrote to memory of 2304	1628	mouse_2.exe	mouse_2.exe
PID 1628 wrote to memory of 2304	1628	mouse_2.exe	mouse_2.exe

C:\Users\Admin\AppData\Local\Temp\mouse_2.exe
"C:\Users\Admin\AppData\Local\Temp\mouse_2.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1628

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\aqkfZm" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA8A5.tmp"
2⤵
- Creates scheduled task(s)
PID:2792

C:\Users\Admin\AppData\Local\Temp\mouse_2.exe
"{path}"
2⤵
- Checks computer location settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2304

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\mouse_2.exe.log
MD5
b4f7a6a57cb46d94b72410eb6a6d45a9

SHA1
69f3596ffa027202d391444b769ceea0ae14c5f7

SHA256
23994ebe221a48ea16ebad51ae0d4b47ccd415ae10581f9405e588d4f6c2523b

SHA512
be6da516e54c3a5b33ac2603137a2f8cf8445ff5961dd266faedf3627bae8979953d7ef305538df0151c609917a5b99bf5d023bdd32de50fd5c723950f90db5c

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpA8A5.tmp
MD5
991c714fb2676147ed039212125132d1

SHA1
f8f6b1325bdc8a8f4f3995b95172217c20de0cd0

SHA256
594f35982b9d7646b17f2c212b98b1806e8d57d84764554dac5c59eacd4b2f2c

SHA512
fd33670a4b5603e38fb9d099c557742177ed5ec23a1b0d98d2e9ee18c74ab83cf188638567703b8a6f4c77ac4dda046013b6de80f4a5a56ef9313c3240dc77c4

Download Submit
memory/1628-9-0x00000000054D0000-0x0000000005579000-memory.dmp

Filesize
676KB

Download
memory/1628-4-0x000000000B240000-0x000000000B241000-memory.dmp

Filesize
4KB

Download
memory/1628-5-0x000000000ADE0000-0x000000000ADE1000-memory.dmp

Filesize
4KB

Download
memory/1628-6-0x000000000AD60000-0x000000000AD61000-memory.dmp

Filesize
4KB

Download
memory/1628-7-0x000000000B050000-0x000000000B052000-memory.dmp

Filesize
8KB

Download
memory/1628-8-0x000000000C840000-0x000000000C841000-memory.dmp

Filesize
4KB

Download
memory/1628-0-0x0000000073840000-0x0000000073F2E000-memory.dmp

Filesize
6.9MB

Download
memory/1628-1-0x0000000000BB0000-0x0000000000BB1000-memory.dmp

Filesize
4KB

Download
memory/1628-3-0x0000000007980000-0x0000000007A3B000-memory.dmp

Filesize
748KB

Download
memory/2304-13-0x00000000004A2B3E-mapping.dmp

Download
memory/2304-12-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/2304-15-0x0000000073840000-0x0000000073F2E000-memory.dmp

Filesize
6.9MB

Download
memory/2304-20-0x0000000004EA0000-0x0000000004EDE000-memory.dmp

Filesize
248KB

Download
memory/2304-21-0x0000000005050000-0x0000000005051000-memory.dmp

Filesize
4KB

Download
memory/2304-24-0x00000000078C0000-0x00000000078C1000-memory.dmp

Filesize
4KB

Download
memory/2792-10-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads