blustealer | 97acdbf4f3b197429b754d04a0e8f94fac94cbf02b9a3262ca350be271d9355c

General

Target

bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe
Size

993KB
MD5

d797a49c43ff7ef5417507b47ba32762
SHA1

8fc053b6c85b84515cd518d33893273e63f2f9b6
SHA256

bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed
SHA512

201307649e42a24f3a39d512e45868e9d9f0a30cb7326ca7e7e5a3d87bf3d9b59bc435c57c3713aff1b8136d8f7dfc0bb31c35030e2c8f35159362dd777dcdd1
SSDEEP

12288:7i+0xvpf9mS6HHpDxvTA0ToeWwh0FfCC9bucNkudpyhA:30DF4FUzeW64ZAcNlyhA

Score

10^/10

blustealer stormkitty collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5415235188:AAGqakDD6FZcw5LLX6hH5qVayV-1OGURlEo/sendMessage?chat_id=1372472614

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/860-147-0x00000000001C0000-0x00000000001DA000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.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
37	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1944 set thread context of 1548	1944	bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe	94
PID 1548 set thread context of 860	1548	bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe	95

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 6 IoCs

pid	Process
1944	bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe
1944	bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe
1944	bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe
1944	bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe
1944	bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe
1944	bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1548	bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1944	bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe
Token: SeDebugPrivilege	860	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1548	bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1944 wrote to memory of 1400	1944	bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe	93
PID 1944 wrote to memory of 1400	1944	bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe	93
PID 1944 wrote to memory of 1400	1944	bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe	93
PID 1944 wrote to memory of 1548	1944	bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe	94
PID 1944 wrote to memory of 1548	1944	bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe	94
PID 1944 wrote to memory of 1548	1944	bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe	94
PID 1944 wrote to memory of 1548	1944	bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe	94
PID 1944 wrote to memory of 1548	1944	bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe	94
PID 1944 wrote to memory of 1548	1944	bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe	94
PID 1944 wrote to memory of 1548	1944	bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe	94
PID 1944 wrote to memory of 1548	1944	bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe	94
PID 1548 wrote to memory of 860	1548	bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe	95
PID 1548 wrote to memory of 860	1548	bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe	95
PID 1548 wrote to memory of 860	1548	bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe	95
PID 1548 wrote to memory of 860	1548	bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe	95
PID 1548 wrote to memory of 860	1548	bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe	95

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe
"C:\Users\Admin\AppData\Local\Temp\bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1944
- C:\Users\Admin\AppData\Local\Temp\bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe
  "C:\Users\Admin\AppData\Local\Temp\bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe"
  2⤵
  PID:1400
- C:\Users\Admin\AppData\Local\Temp\bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe
  "C:\Users\Admin\AppData\Local\Temp\bdc7b9697bec25f67536bd94457642b0f009f82f05398417202b39b3ffc31bed.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1548
- - 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:860

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/860-147-0x00000000001C0000-0x00000000001DA000-memory.dmp

Filesize
104KB

Download
memory/1548-142-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1548-140-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1548-145-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1548-148-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1944-136-0x0000000008190000-0x000000000822C000-memory.dmp

Filesize
624KB

Download
memory/1944-137-0x00000000084A0000-0x0000000008506000-memory.dmp

Filesize
408KB

Download
memory/1944-135-0x0000000005A40000-0x0000000005A4A000-memory.dmp

Filesize
40KB

Download
memory/1944-132-0x0000000000F10000-0x000000000100E000-memory.dmp

Filesize
1016KB

Download
memory/1944-134-0x0000000005990000-0x0000000005A22000-memory.dmp

Filesize
584KB

Download
memory/1944-133-0x0000000006020000-0x00000000065C4000-memory.dmp

Filesize
5.6MB

Download

Analysis

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