a310logger | 2183dd8a07c328ff41cf8fedc06bdc9ec8166d6c11691cb6d379899318d8e555

General

Target

a6c09767f7b9b02156bd3e4f67764e79.exe
Size

922KB
MD5

a6c09767f7b9b02156bd3e4f67764e79
SHA1

5aa1d0515cd9ca1802c872cd8a9354b65cef7463
SHA256

2183dd8a07c328ff41cf8fedc06bdc9ec8166d6c11691cb6d379899318d8e555
SHA512

5f7072604303b4bea39a1c4751e09eb8399d9a10984ba2ddb699680145c952fb71d180e3e56135d30aa9639e9f5ff3899a3e58a2b7ab5d0ec38b88f94f17aa50
SSDEEP

24576:g831bHyqkkvaWB5DQaL+YFswDsd8U0Gdb:g83xjfa65DeYeCUr

Score

10^/10

a310logger blustealer collection spyware stealer

Malware Config

Extracted

Family

blustealer

Credentials

Protocol: smtp
Host:
mail.masarprecast.com
Port:
587
Username:
[email protected]
Password:
Masar@Shj06

Signatures

A310logger
A310 Logger is a .NET stealer/logger targeting passwords from browsers and email clients.
stealer spyware a310logger
BluStealer
A Modular information stealer written in Visual Basic.
stealer blustealer

A310logger Executable 2 IoCs

resource	yara_rule
behavioral2/files/0x000600000002324e-52.dat	a310logger
behavioral2/memory/540-54-0x0000000000430000-0x00000000004E2000-memory.dmp	a310logger

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-910440534-423636034-2318342392-1000\Control Panel\International\Geo\Nation	a6c09767f7b9b02156bd3e4f67764e79.exe

Executes dropped EXE 1 IoCs

pid	Process
540	Fox.exe

Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-910440534-423636034-2318342392-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Fox.exe
Key opened	\REGISTRY\USER\S-1-5-21-910440534-423636034-2318342392-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Fox.exe
Key opened	\REGISTRY\USER\S-1-5-21-910440534-423636034-2318342392-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Fox.exe

Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 452 set thread context of 4384	452	a6c09767f7b9b02156bd3e4f67764e79.exe	92

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

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/Job

T1053

pid	Process
3320	schtasks.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4384	a6c09767f7b9b02156bd3e4f67764e79.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 452 wrote to memory of 3320	452	a6c09767f7b9b02156bd3e4f67764e79.exe	90
PID 452 wrote to memory of 3320	452	a6c09767f7b9b02156bd3e4f67764e79.exe	90
PID 452 wrote to memory of 3320	452	a6c09767f7b9b02156bd3e4f67764e79.exe	90
PID 452 wrote to memory of 4384	452	a6c09767f7b9b02156bd3e4f67764e79.exe	92
PID 452 wrote to memory of 4384	452	a6c09767f7b9b02156bd3e4f67764e79.exe	92
PID 452 wrote to memory of 4384	452	a6c09767f7b9b02156bd3e4f67764e79.exe	92
PID 452 wrote to memory of 4384	452	a6c09767f7b9b02156bd3e4f67764e79.exe	92
PID 452 wrote to memory of 4384	452	a6c09767f7b9b02156bd3e4f67764e79.exe	92
PID 452 wrote to memory of 4384	452	a6c09767f7b9b02156bd3e4f67764e79.exe	92
PID 452 wrote to memory of 4384	452	a6c09767f7b9b02156bd3e4f67764e79.exe	92
PID 452 wrote to memory of 4384	452	a6c09767f7b9b02156bd3e4f67764e79.exe	92
PID 4384 wrote to memory of 540	4384	a6c09767f7b9b02156bd3e4f67764e79.exe	93
PID 4384 wrote to memory of 540	4384	a6c09767f7b9b02156bd3e4f67764e79.exe	93

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-910440534-423636034-2318342392-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Fox.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-910440534-423636034-2318342392-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Fox.exe

C:\Users\Admin\AppData\Local\Temp\a6c09767f7b9b02156bd3e4f67764e79.exe
"C:\Users\Admin\AppData\Local\Temp\a6c09767f7b9b02156bd3e4f67764e79.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:452
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\LEjGKtEzH" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFFBD.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:3320
- C:\Users\Admin\AppData\Local\Temp\a6c09767f7b9b02156bd3e4f67764e79.exe
  "C:\Users\Admin\AppData\Local\Temp\a6c09767f7b9b02156bd3e4f67764e79.exe"
  2⤵
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4384
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\Fox.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\Fox.exe
    3⤵
    - Executes dropped EXE
    - Accesses Microsoft Outlook profiles
    - outlook_office_path
    - outlook_win_path
    PID:540

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Unsecured Credentials

4

T1552

Credentials In Files

3

T1552.001

Credentials in Registry

1

T1552.002

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmpFFBD.tmp

Filesize
1KB

MD5
fa9924d504409658ef3ae81e098f3f08

SHA1
c23aabbcf1cfe0eb9c4d02d81afa1d05ee71d8ae

SHA256
141802309a9fddbf7c911261032cd8dcbe535363d8f6ab6f357344af3abd2440

SHA512
d4c805f251dc1e6044a61d141a36be915a30d9c3a149582466a7c252194baf6da82086f1553c5d615794cc4044570b4ce7214a17e704da67240240697b8de753

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\EVQMEOAHHN.zip

Filesize
285KB

MD5
40a9752d59f2883e40d928f85a749008

SHA1
c60fb58eff64a7969b46f3934766f991352eeb47

SHA256
ef95540ec8dae3d255439fb847d26397c265b5cccda5ed0d6b9ed3dda14a2820

SHA512
ce33985f91103315accb1039635488d7e144df264bab8e164c1f9844ce6923e1c9c76349f14542901887ffcbbbca40b92cf474126f0b94893e8af1f608464b3c

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\Fox.exe

Filesize
689KB

MD5
91b41651e6e9ab352805c6d35a297d08

SHA1
11b8eaa7b7941461bc952b11ec3f07d25dcd1c2e

SHA256
0872abe29cc9231cdded3a44e02a7ea17f09cf2ac2bdbd7077065858829c3723

SHA512
b0b0d73f6ac7b6e9b39db0fa58931873143f6559c3b8d3db2d82d453045f75da94f3236b6c6c5200b52af6cacc038565eb2e9c6a834608dac0b0e8bb45b1e892

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\credentials.txt

Filesize
691B

MD5
055c857272026583a61e1b5821c69a24

SHA1
ec39d34f16487682801dd2b319554cbed57feca4

SHA256
190db16bb64995e3bdea04b9e6fc1994dacfea3253a7559732205b1d41362b84

SHA512
d7833c4651683e95959107e05b07b60d2e963b9fbecd0106b329e2087d1dfc9aedb962b334e22b6b462699cbce86097d4d50ce5d1310ad098e3531efaa4e204b

Download Submit
memory/452-6-0x00000000050C0000-0x00000000050CA000-memory.dmp

Filesize
40KB

Download
memory/452-11-0x0000000008330000-0x00000000083FE000-memory.dmp

Filesize
824KB

Download
memory/452-0-0x0000000000540000-0x000000000062C000-memory.dmp

Filesize
944KB

Download
memory/452-7-0x0000000005310000-0x0000000005366000-memory.dmp

Filesize
344KB

Download
memory/452-8-0x00000000066E0000-0x00000000066F6000-memory.dmp

Filesize
88KB

Download
memory/452-9-0x0000000075210000-0x00000000759C0000-memory.dmp

Filesize
7.7MB

Download
memory/452-10-0x00000000050A0000-0x00000000050B0000-memory.dmp

Filesize
64KB

Download
memory/452-2-0x0000000004F90000-0x000000000502C000-memory.dmp

Filesize
624KB

Download
memory/452-12-0x0000000008020000-0x0000000008082000-memory.dmp

Filesize
392KB

Download
memory/452-4-0x00000000050E0000-0x0000000005172000-memory.dmp

Filesize
584KB

Download
memory/452-1-0x0000000075210000-0x00000000759C0000-memory.dmp

Filesize
7.7MB

Download
memory/452-5-0x00000000050A0000-0x00000000050B0000-memory.dmp

Filesize
64KB

Download
memory/452-22-0x0000000075210000-0x00000000759C0000-memory.dmp

Filesize
7.7MB

Download
memory/452-3-0x0000000005690000-0x0000000005C34000-memory.dmp

Filesize
5.6MB

Download
memory/540-55-0x00007FFBAEA10000-0x00007FFBAF4D1000-memory.dmp

Filesize
10.8MB

Download
memory/540-54-0x0000000000430000-0x00000000004E2000-memory.dmp

Filesize
712KB

Download
memory/540-56-0x0000000000E20000-0x0000000000E30000-memory.dmp

Filesize
64KB

Download
memory/540-64-0x00007FFBAEA10000-0x00007FFBAF4D1000-memory.dmp

Filesize
10.8MB

Download
memory/4384-21-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/4384-18-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/4384-68-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads