masslogger | e2757d60ab3f7e915054c0d0b29e4ccfacd11cec85861925a652df79f6ad467f

General

Target

New products_Inquiry00000000PDF.scr
Size

1007KB
MD5

4410f1e9106370721dd61b665e62db98
SHA1

eadff44552f64370b85c35abd736c39465fd833d
SHA256

6d8dbdf39f97cc1b6730d7eb7b2ac7f60ac2026e5ac33edb00093f1a87cfcf9a
SHA512

60ee671e4b37b6cc58ae8bd7351e475f8279827ea7eab30d463e4e201db99b9300b84d21b997ffc029e5cbbb6e4a5efcddb71dceb661a644a4a4227eb3009c67

Score

10^/10

masslogger coreentity 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 3:48:26 AM MassLogger Started: 5/21/2022 3:47:48 AM Interval: 1 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\New products_Inquiry00000000PDF.scr MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

Signatures

CoreEntity .NET Packer 1 IoCs

A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

coreentity

Processes:

resource	yara_rule
behavioral1/memory/1152-56-0x0000000000490000-0x0000000000498000-memory.dmp	coreentity

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

MassLogger Main Payload 32 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1956-63-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1956-65-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1956-66-0x00000000004A3A4E-mapping.dmp	family_masslogger
behavioral1/memory/1956-64-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1956-68-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1956-70-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1956-72-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1956-74-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1956-76-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1956-78-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1956-80-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1956-82-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1956-84-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1956-86-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1956-88-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1956-90-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1956-92-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1956-94-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1956-96-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1956-98-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1956-100-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1956-102-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1956-104-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1956-106-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1956-108-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1956-110-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1956-112-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1956-114-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1956-116-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1956-118-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1956-120-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1956-122-0x0000000000400000-0x00000000004A8000-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/1152-57-0x00000000082A0000-0x0000000008350000-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:

New products_Inquiry00000000PDF.scr

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Control Panel\International\Geo\Nation	New products_Inquiry00000000PDF.scr

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:

New products_Inquiry00000000PDF.scr

description pid process target process

PID 1152 set thread context of 1956 1152 New products_Inquiry00000000PDF.scr New products_Inquiry00000000PDF.scr
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
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

2020 schtasks.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

New products_Inquiry00000000PDF.scr

pid process

1956 New products_Inquiry00000000PDF.scr
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

New products_Inquiry00000000PDF.scr

description pid process

Token: SeDebugPrivilege 1956 New products_Inquiry00000000PDF.scr

flow	ioc
4	api.ipify.org

description	pid	process	target process
PID 1152 set thread context of 1956	1152	New products_Inquiry00000000PDF.scr	New products_Inquiry00000000PDF.scr

pid	process
2020	schtasks.exe

pid	process
1956	New products_Inquiry00000000PDF.scr

description	pid	process
Token: SeDebugPrivilege	1956	New products_Inquiry00000000PDF.scr

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

New products_Inquiry00000000PDF.scr

description	pid	process	target process
PID 1152 wrote to memory of 2020	1152	New products_Inquiry00000000PDF.scr	schtasks.exe
PID 1152 wrote to memory of 2020	1152	New products_Inquiry00000000PDF.scr	schtasks.exe
PID 1152 wrote to memory of 2020	1152	New products_Inquiry00000000PDF.scr	schtasks.exe
PID 1152 wrote to memory of 2020	1152	New products_Inquiry00000000PDF.scr	schtasks.exe
PID 1152 wrote to memory of 1956	1152	New products_Inquiry00000000PDF.scr	New products_Inquiry00000000PDF.scr
PID 1152 wrote to memory of 1956	1152	New products_Inquiry00000000PDF.scr	New products_Inquiry00000000PDF.scr
PID 1152 wrote to memory of 1956	1152	New products_Inquiry00000000PDF.scr	New products_Inquiry00000000PDF.scr
PID 1152 wrote to memory of 1956	1152	New products_Inquiry00000000PDF.scr	New products_Inquiry00000000PDF.scr
PID 1152 wrote to memory of 1956	1152	New products_Inquiry00000000PDF.scr	New products_Inquiry00000000PDF.scr
PID 1152 wrote to memory of 1956	1152	New products_Inquiry00000000PDF.scr	New products_Inquiry00000000PDF.scr
PID 1152 wrote to memory of 1956	1152	New products_Inquiry00000000PDF.scr	New products_Inquiry00000000PDF.scr
PID 1152 wrote to memory of 1956	1152	New products_Inquiry00000000PDF.scr	New products_Inquiry00000000PDF.scr
PID 1152 wrote to memory of 1956	1152	New products_Inquiry00000000PDF.scr	New products_Inquiry00000000PDF.scr

C:\Users\Admin\AppData\Local\Temp\New products_Inquiry00000000PDF.scr
"C:\Users\Admin\AppData\Local\Temp\New products_Inquiry00000000PDF.scr" /S
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1152

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\DrndlXgU" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC41.tmp"
2⤵
- Creates scheduled task(s)
PID:2020

C:\Users\Admin\AppData\Local\Temp\New products_Inquiry00000000PDF.scr
"{path}"
2⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1956

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

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpC41.tmp
Filesize
1KB

MD5
efd4be3da731f54f2e6131c6c1ec5c08

SHA1
1a94c31c97b54218c3d500ce09bdf3a284a28be1

SHA256
5a73f8831e7cf7d85017a53ac87cfc1151b1ca93b4eefc3927b75b872818cd19

SHA512
458df8ad001601842758ce6c09413f0cea572893fd5efa8ed9c3273882974182cf8ce11a626604efe1e3f1e1f9043d38260c2e87aedc30595d4f280c9de6c4f3

Download Submit
memory/1152-55-0x00000000763E1000-0x00000000763E3000-memory.dmp

Filesize
8KB

Download
memory/1152-56-0x0000000000490000-0x0000000000498000-memory.dmp

Filesize
32KB

Download
memory/1152-57-0x00000000082A0000-0x0000000008350000-memory.dmp

Filesize
704KB

Download
memory/1152-54-0x0000000000C80000-0x0000000000D80000-memory.dmp

Filesize
1024KB

Download
memory/1956-84-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1956-88-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1956-61-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1956-63-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1956-65-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1956-66-0x00000000004A3A4E-mapping.dmp

Download
memory/1956-64-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1956-68-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1956-70-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1956-72-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1956-74-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1956-76-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1956-78-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1956-80-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1956-82-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1956-580-0x0000000004F95000-0x0000000004FA6000-memory.dmp

Filesize
68KB

Download
memory/1956-86-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1956-60-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1956-90-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1956-92-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1956-94-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1956-96-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1956-98-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1956-100-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1956-102-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1956-104-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1956-106-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1956-108-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1956-110-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1956-112-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1956-114-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1956-116-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1956-118-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1956-120-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1956-122-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/2020-58-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads