masslogger | 7809213c9557db2f152b7b1a259e8ed352ac27270e623d1c780e3cfd32ac14b0

General

Target

OUR_NEW_.exe
Size

766KB
MD5

2bd29021de1827a18eb2ba749724809a
SHA1

939c8d922f9fe7f04b1fedeb4032609c83e23fcf
SHA256

110e9666025176f94b715b77f8677d5eb9049c6a79d61716be8e1646b70b36bb
SHA512

0ace069a3bafdfb14a7589c1f50dd0fd43ee05da4e5553d5706eef727d77dfaca5995a532a8752e76e45948f343559cf63ae09aa2f432d6e9ee880fa26252dcf

Score

10^/10

masslogger ransomware rezer0 spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\3B8E3C2477\Log.txt

Family

masslogger

Ransom Note

################################################################# MassLogger v1.3.4.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.50 Location: United States OS: Microsoft Windows 7 Ultimate 64bit CPU: Intel Core Processor (Broadwell) GPU: Standard VGA Graphics Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/21/2022 2:32:58 PM MassLogger Started: 5/21/2022 2:32:43 PM Interval: 96 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\OUR_NEW_.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 33 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1376-60-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1376-61-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1376-63-0x00000000004ABEAE-mapping.dmp	family_masslogger
behavioral1/memory/1376-62-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1376-65-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1376-67-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1376-69-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1376-71-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1376-73-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1376-75-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1376-77-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1376-79-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1376-81-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1376-83-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1376-85-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1376-87-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1376-89-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1376-91-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1376-93-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1376-103-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1376-105-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1376-101-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1376-99-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1376-97-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1376-95-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1376-109-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1376-107-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1376-111-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1376-115-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1376-121-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1376-119-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1376-117-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1376-113-0x0000000000400000-0x00000000004B0000-memory.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 packer 1 IoCs

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

rezer0

Processes:

resource	yara_rule
behavioral1/memory/880-56-0x0000000004D60000-0x0000000004E18000-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:

OUR_NEW_.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Control Panel\International\Geo\Nation	OUR_NEW_.exe

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

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

Processes:

OUR_NEW_.exe

description pid process target process

PID 880 set thread context of 1376 880 OUR_NEW_.exe OUR_NEW_.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

OUR_NEW_.exe

pid process

1376 OUR_NEW_.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

OUR_NEW_.exe

description pid process

Token: SeDebugPrivilege 1376 OUR_NEW_.exe

flow	ioc
4	api.ipify.org

description	pid	process	target process
PID 880 set thread context of 1376	880	OUR_NEW_.exe	OUR_NEW_.exe

pid	process
1376	OUR_NEW_.exe

description	pid	process
Token: SeDebugPrivilege	1376	OUR_NEW_.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

OUR_NEW_.exe

description	pid	process	target process
PID 880 wrote to memory of 1376	880	OUR_NEW_.exe	OUR_NEW_.exe
PID 880 wrote to memory of 1376	880	OUR_NEW_.exe	OUR_NEW_.exe
PID 880 wrote to memory of 1376	880	OUR_NEW_.exe	OUR_NEW_.exe
PID 880 wrote to memory of 1376	880	OUR_NEW_.exe	OUR_NEW_.exe
PID 880 wrote to memory of 1376	880	OUR_NEW_.exe	OUR_NEW_.exe
PID 880 wrote to memory of 1376	880	OUR_NEW_.exe	OUR_NEW_.exe
PID 880 wrote to memory of 1376	880	OUR_NEW_.exe	OUR_NEW_.exe
PID 880 wrote to memory of 1376	880	OUR_NEW_.exe	OUR_NEW_.exe
PID 880 wrote to memory of 1376	880	OUR_NEW_.exe	OUR_NEW_.exe

C:\Users\Admin\AppData\Local\Temp\OUR_NEW_.exe
"C:\Users\Admin\AppData\Local\Temp\OUR_NEW_.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:880

C:\Users\Admin\AppData\Local\Temp\OUR_NEW_.exe
"C:\Users\Admin\AppData\Local\Temp\OUR_NEW_.exe"
2⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1376

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/880-54-0x0000000000F50000-0x0000000001016000-memory.dmp

Filesize
792KB

Download
memory/880-55-0x0000000000280000-0x0000000000288000-memory.dmp

Filesize
32KB

Download
memory/880-56-0x0000000004D60000-0x0000000004E18000-memory.dmp

Filesize
736KB

Download
memory/1376-57-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-58-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-60-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-61-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-63-0x00000000004ABEAE-mapping.dmp

Download
memory/1376-62-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-65-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-67-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-69-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-71-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-73-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-75-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-77-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-79-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-81-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-83-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-85-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-87-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-89-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-91-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-93-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-103-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-105-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-101-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-99-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-97-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-95-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-109-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-107-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-111-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-115-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-121-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-119-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-117-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-113-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-576-0x0000000000500000-0x0000000000544000-memory.dmp

Filesize
272KB

Download
memory/1376-578-0x0000000004EB5000-0x0000000004EC6000-memory.dmp

Filesize
68KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads