blustealer | 617fbed8938dd5a9348bb5bfa4d81007e910fd257e286f2b76323b95433b4ae0

General

Target

Swift-IMG_20221004_001.exe
Size

22KB
MD5

e0c62ae1f14853f48c209caaf79e8d14
SHA1

c10eb3c2f9bd4725ea96850ddfc1599f747dea58
SHA256

617fbed8938dd5a9348bb5bfa4d81007e910fd257e286f2b76323b95433b4ae0
SHA512

06c5682006d9cf3330c7dce3beb60536794aa1c66ede77df54886bd43286f243c8a9b130ca42c74901ebbea5d9dfa50194014971c767235bec4969f2464e6b2d
SSDEEP

384:TSK+X9LuPNMDo5e5Zz5TBHCZJ5H1NrOV:TSK+Ra8dFTBi3vNrOV

Score

10^/10

blustealer stormkitty collection persistence stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5732817033:AAFBYIIZmJ7NuvVwD7WRcbV9qwcOqT7RpwM/sendMessage?chat_id=1638137774

Signatures

BluStealer
A Modular information stealer written in Visual Basic.
stealer blustealer
StormKitty
StormKitty is an open source info stealer written in C#.
stealer stormkitty

StormKitty payload 1 IoCs

resource	yara_rule
behavioral2/memory/2404-150-0x0000000000C00000-0x0000000000C1A000-memory.dmp	family_stormkitty

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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	Swift-IMG_20221004_001.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

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-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Irmjh = "\"C:\\Users\\Admin\\AppData\\Roaming\\Fdkknn\\Irmjh.exe\""	Swift-IMG_20221004_001.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
30	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1884 set thread context of 2528	1884	Swift-IMG_20221004_001.exe	92
PID 2528 set thread context of 2404	2528	Swift-IMG_20221004_001.exe	94

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	AppLaunch.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	AppLaunch.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4600	powershell.exe
4600	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2528	Swift-IMG_20221004_001.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1884	Swift-IMG_20221004_001.exe
Token: SeDebugPrivilege	4600	powershell.exe
Token: SeDebugPrivilege	2404	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2528	Swift-IMG_20221004_001.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1884 wrote to memory of 4600	1884	Swift-IMG_20221004_001.exe	84
PID 1884 wrote to memory of 4600	1884	Swift-IMG_20221004_001.exe	84
PID 1884 wrote to memory of 4600	1884	Swift-IMG_20221004_001.exe	84
PID 1884 wrote to memory of 2528	1884	Swift-IMG_20221004_001.exe	92
PID 1884 wrote to memory of 2528	1884	Swift-IMG_20221004_001.exe	92
PID 1884 wrote to memory of 2528	1884	Swift-IMG_20221004_001.exe	92
PID 1884 wrote to memory of 2528	1884	Swift-IMG_20221004_001.exe	92
PID 1884 wrote to memory of 2528	1884	Swift-IMG_20221004_001.exe	92
PID 1884 wrote to memory of 2528	1884	Swift-IMG_20221004_001.exe	92
PID 1884 wrote to memory of 2528	1884	Swift-IMG_20221004_001.exe	92
PID 1884 wrote to memory of 2528	1884	Swift-IMG_20221004_001.exe	92
PID 2528 wrote to memory of 2404	2528	Swift-IMG_20221004_001.exe	94
PID 2528 wrote to memory of 2404	2528	Swift-IMG_20221004_001.exe	94
PID 2528 wrote to memory of 2404	2528	Swift-IMG_20221004_001.exe	94
PID 2528 wrote to memory of 2404	2528	Swift-IMG_20221004_001.exe	94
PID 2528 wrote to memory of 2404	2528	Swift-IMG_20221004_001.exe	94

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\Swift-IMG_20221004_001.exe
"C:\Users\Admin\AppData\Local\Temp\Swift-IMG_20221004_001.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1884
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4600
- C:\Users\Admin\AppData\Local\Temp\Swift-IMG_20221004_001.exe
  C:\Users\Admin\AppData\Local\Temp\Swift-IMG_20221004_001.exe
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2528
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
    3⤵
    - Accesses Microsoft Outlook profiles
    - Checks processor information in registry
    - Suspicious use of AdjustPrivilegeToken
    - outlook_office_path
    - outlook_win_path
    PID:2404

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

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

memory/1884-133-0x0000000006760000-0x0000000006782000-memory.dmp

Filesize
136KB

Download
memory/1884-132-0x0000000000BD0000-0x0000000000BDC000-memory.dmp

Filesize
48KB

Download
memory/2404-151-0x00000000059D0000-0x0000000005A6C000-memory.dmp

Filesize
624KB

Download
memory/2404-150-0x0000000000C00000-0x0000000000C1A000-memory.dmp

Filesize
104KB

Download
memory/2528-152-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2528-148-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2528-145-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2528-143-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4600-136-0x0000000004FE0000-0x0000000005608000-memory.dmp

Filesize
6.2MB

Download
memory/4600-141-0x0000000006410000-0x000000000642A000-memory.dmp

Filesize
104KB

Download
memory/4600-140-0x0000000007780000-0x0000000007DFA000-memory.dmp

Filesize
6.5MB

Download
memory/4600-139-0x0000000005F00000-0x0000000005F1E000-memory.dmp

Filesize
120KB

Download
memory/4600-138-0x00000000058E0000-0x0000000005946000-memory.dmp

Filesize
408KB

Download
memory/4600-137-0x00000000057C0000-0x0000000005826000-memory.dmp

Filesize
408KB

Download
memory/4600-135-0x0000000004970000-0x00000000049A6000-memory.dmp

Filesize
216KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads