masslogger | b2ad224e14768937724111bc6367030c09ea540476364fa052a64701a2c940a9

Analysis

max time kernel
160s
max time network
186s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
21-05-2022 02:18

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General

Target

Proforma Invoice.exe
Size

1.0MB
MD5

a009bf5f0bc5b29b3c7f70203584c20c
SHA1

1f95f553fb11d4d6f6b7a6a15a3ed19aba8403ba
SHA256

8c3156c901bae62d20fce1aa07a4c0e0252ac6ab6443877396a37f83441f2b65
SHA512

4185e273e76f21c4521f243d6f7aab693996269e4937053c053bba3ac2f83dcf0039b02ff7da23ae2648bc906e96e18f2f82e21a58956268518d4b1fd688b9bd

Score

10^/10

masslogger ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\8236ADF044\Log.txt

Family

masslogger

Ransom Note

################################################################# MassLogger v1.3.6.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.50 Location: United States Windows OS: Microsoft Windows 10 Pro64bit Windows Serial Key: W269N-WFGWX-YVC9B-4J6C9-T83GX CPU: Intel Core Processor (Broadwell) GPU: Microsoft Basic Display Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/21/2022 5:30:40 AM MassLogger Started: 5/21/2022 5:30:29 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\Proforma Invoice.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 32 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4228-138-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral2/memory/4228-141-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral2/memory/4228-143-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral2/memory/4228-145-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral2/memory/4228-147-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral2/memory/4228-149-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral2/memory/4228-151-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral2/memory/4228-153-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral2/memory/4228-155-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral2/memory/4228-157-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral2/memory/4228-159-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral2/memory/4228-161-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral2/memory/4228-163-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral2/memory/4228-165-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral2/memory/4228-167-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral2/memory/4228-169-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral2/memory/4228-171-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral2/memory/4228-173-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral2/memory/4228-175-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral2/memory/4228-177-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral2/memory/4228-179-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral2/memory/4228-181-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral2/memory/4228-183-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral2/memory/4228-185-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral2/memory/4228-187-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral2/memory/4228-189-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral2/memory/4228-191-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral2/memory/4228-193-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral2/memory/4228-195-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral2/memory/4228-197-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral2/memory/4228-201-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral2/memory/4228-199-0x0000000000400000-0x00000000004B2000-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

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Proforma Invoice.exeProforma Invoice.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	Proforma Invoice.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	Proforma Invoice.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

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

Processes:

Proforma Invoice.exe

description pid process target process

PID 1844 set thread context of 4228 1844 Proforma Invoice.exe Proforma Invoice.exe
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

4332 schtasks.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

Proforma Invoice.exe

pid process

4228 Proforma Invoice.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Proforma Invoice.exe

pid process

4228 Proforma Invoice.exe
4228 Proforma Invoice.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Proforma Invoice.exe

description pid process

Token: SeDebugPrivilege 4228 Proforma Invoice.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Proforma Invoice.exe

pid process

4228 Proforma Invoice.exe

flow	ioc
41	api.ipify.org

description	pid	process	target process
PID 1844 set thread context of 4228	1844	Proforma Invoice.exe	Proforma Invoice.exe

pid	process
4332	schtasks.exe

pid	process
4228	Proforma Invoice.exe

pid	process
4228	Proforma Invoice.exe
4228	Proforma Invoice.exe

description	pid	process
Token: SeDebugPrivilege	4228	Proforma Invoice.exe

pid	process
4228	Proforma Invoice.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

Proforma Invoice.exe

description	pid	process	target process
PID 1844 wrote to memory of 4332	1844	Proforma Invoice.exe	schtasks.exe
PID 1844 wrote to memory of 4332	1844	Proforma Invoice.exe	schtasks.exe
PID 1844 wrote to memory of 4332	1844	Proforma Invoice.exe	schtasks.exe
PID 1844 wrote to memory of 4228	1844	Proforma Invoice.exe	Proforma Invoice.exe
PID 1844 wrote to memory of 4228	1844	Proforma Invoice.exe	Proforma Invoice.exe
PID 1844 wrote to memory of 4228	1844	Proforma Invoice.exe	Proforma Invoice.exe
PID 1844 wrote to memory of 4228	1844	Proforma Invoice.exe	Proforma Invoice.exe
PID 1844 wrote to memory of 4228	1844	Proforma Invoice.exe	Proforma Invoice.exe
PID 1844 wrote to memory of 4228	1844	Proforma Invoice.exe	Proforma Invoice.exe
PID 1844 wrote to memory of 4228	1844	Proforma Invoice.exe	Proforma Invoice.exe
PID 1844 wrote to memory of 4228	1844	Proforma Invoice.exe	Proforma Invoice.exe

C:\Users\Admin\AppData\Local\Temp\Proforma Invoice.exe
"C:\Users\Admin\AppData\Local\Temp\Proforma Invoice.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1844
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\efLaWx" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1306.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:4332
- C:\Users\Admin\AppData\Local\Temp\Proforma Invoice.exe
  "{path}"
  2⤵
  - Checks computer location settings
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:4228

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Proforma Invoice.exe.log

Filesize
1KB

MD5
8ec831f3e3a3f77e4a7b9cd32b48384c

SHA1
d83f09fd87c5bd86e045873c231c14836e76a05c

SHA256
7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

SHA512
26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp1306.tmp

Filesize
1KB

MD5
bf923425b8bc0686f8308c314ecc5e7d

SHA1
babc2d6e48d671b3a647b8d486d5b6aa28c609b2

SHA256
f87306540eec5bf1d74b7560c958ad8010bd7e2d62887d4b0a4132869bf4e418

SHA512
db7c0d9138cb49f7b6ffe03874c6278863d22c7a379e551a308eb8362566843d9508348dc1e3358fbed829515abf031aaa82b39cd04520f5b09658e3a24f0f36

Download Submit
memory/1844-131-0x0000000005670000-0x0000000005C14000-memory.dmp

Filesize
5.6MB

Download
memory/1844-132-0x00000000051C0000-0x0000000005252000-memory.dmp

Filesize
584KB

Download
memory/1844-133-0x0000000005270000-0x000000000527A000-memory.dmp

Filesize
40KB

Download
memory/1844-134-0x00000000089B0000-0x0000000008A4C000-memory.dmp

Filesize
624KB

Download
memory/1844-130-0x0000000000730000-0x000000000083C000-memory.dmp

Filesize
1.0MB

Download
memory/4228-161-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4228-169-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4228-137-0x0000000000000000-mapping.dmp

Download
memory/4228-141-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4228-143-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4228-145-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4228-147-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4228-149-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4228-151-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4228-153-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4228-155-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4228-157-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4228-159-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4228-656-0x0000000005870000-0x00000000058D6000-memory.dmp

Filesize
408KB

Download
memory/4228-163-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4228-165-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4228-167-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4228-138-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4228-171-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4228-173-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4228-175-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4228-177-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4228-179-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4228-181-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4228-183-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4228-185-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4228-187-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4228-189-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4228-191-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4228-193-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4228-195-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4228-197-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4228-201-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4228-199-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4332-135-0x0000000000000000-mapping.dmp

Download