blustealer | e57050b46da3903b314d721bfb34e69ad18b8906d29b0193dd155981e5f37807

General

Target

hesaphareketi-01.pdf.exe
Size

933KB
MD5

6a81e1ecfdd0d555504d0718cf22e557
SHA1

73ed263a3f8de8aa99590dd240105b3f6b737150
SHA256

e57050b46da3903b314d721bfb34e69ad18b8906d29b0193dd155981e5f37807
SHA512

2660c2625e9d435cc8afbf57ba1197a02968ef046342877a62a42bcece7ebde8b40748371c0019b43c4f17a669ad614992be5ce4bf5283aba752fd59973b86f1
SSDEEP

12288:Km2iNhdGxvM/Ht1+uRo3MRU/1gKv6BdDaLFgha6lBFbJXlG:91xG+HtcuRLig06TCFgNvFtXlG

Score

10^/10

blustealer stormkitty collection stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5468731092:AAGGNQWBVRhX622u6xp1moMhaunIGtXuIxg/sendMessage?chat_id=1639214896

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/1520-146-0x0000000001180000-0x000000000119A000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\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

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
60	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4288 set thread context of 1656	4288	hesaphareketi-01.pdf.exe	101
PID 1656 set thread context of 1520	1656	hesaphareketi-01.pdf.exe	102

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 7 IoCs

pid	Process
4288	hesaphareketi-01.pdf.exe
4288	hesaphareketi-01.pdf.exe
4288	hesaphareketi-01.pdf.exe
4288	hesaphareketi-01.pdf.exe
4288	hesaphareketi-01.pdf.exe
4288	hesaphareketi-01.pdf.exe
4288	hesaphareketi-01.pdf.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4288	hesaphareketi-01.pdf.exe
Token: SeDebugPrivilege	1520	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1656	hesaphareketi-01.pdf.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 4288 wrote to memory of 1656	4288	hesaphareketi-01.pdf.exe	101
PID 4288 wrote to memory of 1656	4288	hesaphareketi-01.pdf.exe	101
PID 4288 wrote to memory of 1656	4288	hesaphareketi-01.pdf.exe	101
PID 4288 wrote to memory of 1656	4288	hesaphareketi-01.pdf.exe	101
PID 4288 wrote to memory of 1656	4288	hesaphareketi-01.pdf.exe	101
PID 4288 wrote to memory of 1656	4288	hesaphareketi-01.pdf.exe	101
PID 4288 wrote to memory of 1656	4288	hesaphareketi-01.pdf.exe	101
PID 4288 wrote to memory of 1656	4288	hesaphareketi-01.pdf.exe	101
PID 1656 wrote to memory of 1520	1656	hesaphareketi-01.pdf.exe	102
PID 1656 wrote to memory of 1520	1656	hesaphareketi-01.pdf.exe	102
PID 1656 wrote to memory of 1520	1656	hesaphareketi-01.pdf.exe	102
PID 1656 wrote to memory of 1520	1656	hesaphareketi-01.pdf.exe	102
PID 1656 wrote to memory of 1520	1656	hesaphareketi-01.pdf.exe	102

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\hesaphareketi-01.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\hesaphareketi-01.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4288
- C:\Users\Admin\AppData\Local\Temp\hesaphareketi-01.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\hesaphareketi-01.pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1656
- - 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:1520

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/1520-146-0x0000000001180000-0x000000000119A000-memory.dmp

Filesize
104KB

Download
memory/1656-144-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1656-139-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1656-141-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1656-147-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4288-135-0x0000000005640000-0x000000000564A000-memory.dmp

Filesize
40KB

Download
memory/4288-136-0x00000000090B0000-0x000000000914C000-memory.dmp

Filesize
624KB

Download
memory/4288-137-0x00000000093C0000-0x0000000009426000-memory.dmp

Filesize
408KB

Download
memory/4288-132-0x0000000000BD0000-0x0000000000CC0000-memory.dmp

Filesize
960KB

Download
memory/4288-134-0x00000000056C0000-0x0000000005752000-memory.dmp

Filesize
584KB

Download
memory/4288-133-0x0000000005C70000-0x0000000006214000-memory.dmp

Filesize
5.6MB

Download

Analysis

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