a310logger | 51d10bac8aff735f5f365f2ca016a039f9b2c8cabb4e42dca90ab06c13180746

General

Target

TT09099.exe
Size

252KB
MD5

3b376a64c278d40ce6e50a4fdc9b2022
SHA1

0592e33cdedf18068de9d8350a2181ef711a0ba3
SHA256

51d10bac8aff735f5f365f2ca016a039f9b2c8cabb4e42dca90ab06c13180746
SHA512

0bbfd6cc70ec6cfc4218e5d853171578bcf0e36b7b08ba7598b5d52346437dd0c95df09f077099da4fac859f2986dc6caea6242dfaf44acfc6bd87537e0129d0

Score

10^/10

a310logger stormkitty persistence spyware stealer

Malware Config

Signatures

A310logger
A310 Logger is a .NET stealer/logger targeting passwords from browsers and email clients.
stealer spyware a310logger
StormKitty
StormKitty is an open source info stealer written in C#.
stealer stormkitty

StormKitty Payload 2 IoCs

resource	yara_rule
behavioral1/memory/1668-68-0x0000000000400000-0x0000000000418000-memory.dmp	family_stormkitty
behavioral1/memory/1668-69-0x0000000000412452-mapping.dmp	family_stormkitty

A310logger Executable 5 IoCs

resource	yara_rule
behavioral1/memory/1668-68-0x0000000000400000-0x0000000000418000-memory.dmp	a310logger
behavioral1/memory/1668-69-0x0000000000412452-mapping.dmp	a310logger
behavioral1/files/0x00030000000130d3-72.dat	a310logger
behavioral1/files/0x00030000000130d3-74.dat	a310logger
behavioral1/files/0x00030000000130d3-75.dat	a310logger

Executes dropped EXE 1 IoCs

pid	Process
1376	MZ.exe

Loads dropped DLL 3 IoCs

pid	Process
1968	TT09099.exe
1968	TT09099.exe
1668	InstallUtil.exe

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
T1081
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
T1081

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\bxsx = "C:\\Users\\Admin\\AppData\\Roaming\\eyikq\\dynqv.exe"	TT09099.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.

flow	ioc
4	icanhazip.com

Looks up geolocation information via web service
Uses a legitimate geolocation service to find the infected system's geolocation info.

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1968 set thread context of 1760	1968	TT09099.exe	29
PID 1760 set thread context of 1668	1760	TT09099.exe	30

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	InstallUtil.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1376	MZ.exe
1376	MZ.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1760	TT09099.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1968	TT09099.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1376	MZ.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1760	TT09099.exe
1760	TT09099.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1968 wrote to memory of 1760	1968	TT09099.exe	29
PID 1968 wrote to memory of 1760	1968	TT09099.exe	29
PID 1968 wrote to memory of 1760	1968	TT09099.exe	29
PID 1968 wrote to memory of 1760	1968	TT09099.exe	29
PID 1968 wrote to memory of 1760	1968	TT09099.exe	29
PID 1968 wrote to memory of 1760	1968	TT09099.exe	29
PID 1968 wrote to memory of 1760	1968	TT09099.exe	29
PID 1968 wrote to memory of 1760	1968	TT09099.exe	29
PID 1760 wrote to memory of 1668	1760	TT09099.exe	30
PID 1760 wrote to memory of 1668	1760	TT09099.exe	30
PID 1760 wrote to memory of 1668	1760	TT09099.exe	30
PID 1760 wrote to memory of 1668	1760	TT09099.exe	30
PID 1760 wrote to memory of 1668	1760	TT09099.exe	30
PID 1760 wrote to memory of 1668	1760	TT09099.exe	30
PID 1760 wrote to memory of 1668	1760	TT09099.exe	30
PID 1760 wrote to memory of 1668	1760	TT09099.exe	30
PID 1760 wrote to memory of 1668	1760	TT09099.exe	30
PID 1760 wrote to memory of 1668	1760	TT09099.exe	30
PID 1760 wrote to memory of 1668	1760	TT09099.exe	30
PID 1760 wrote to memory of 1668	1760	TT09099.exe	30
PID 1668 wrote to memory of 1376	1668	InstallUtil.exe	32
PID 1668 wrote to memory of 1376	1668	InstallUtil.exe	32
PID 1668 wrote to memory of 1376	1668	InstallUtil.exe	32
PID 1668 wrote to memory of 1376	1668	InstallUtil.exe	32

C:\Users\Admin\AppData\Local\Temp\TT09099.exe
"C:\Users\Admin\AppData\Local\Temp\TT09099.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1968
- C:\Users\Admin\AppData\Local\Temp\TT09099.exe
  "C:\Users\Admin\AppData\Local\Temp\TT09099.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1760
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe
    "C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe"
    3⤵
    - Loads dropped DLL
    - Checks processor information in registry
    - Suspicious use of WriteProcessMemory
    PID:1668
  - - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\MZ.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\MZ.exe"
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1376

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

2

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1376-76-0x00000000009F0000-0x00000000009F2000-memory.dmp

Filesize
8KB

Download
memory/1668-68-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/1668-71-0x0000000000500000-0x0000000000501000-memory.dmp

Filesize
4KB

Download
memory/1760-67-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1968-59-0x00000000767B1000-0x00000000767B3000-memory.dmp

Filesize
8KB

Download
memory/1968-66-0x0000000000370000-0x0000000000373000-memory.dmp

Filesize
12KB

Download

Analysis

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