blustealer | 54c419e5d402c052ca814fa728a82fdb2cfd67788960112429ef2f4734e9c866

Analysis

max time kernel
155s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
20-09-2022 06:15

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General

Target

doc 202209200099010100101.exe
Size

775KB
MD5

208ea4fa3dacf520513730003b3849ff
SHA1

218f95bb8e3e032c6b182197df35ee55579aba67
SHA256

54c419e5d402c052ca814fa728a82fdb2cfd67788960112429ef2f4734e9c866
SHA512

ea5070ce837bca364be4e6f42fae5cf2e831c6486abf74e90d1de9fcb6277bdf51fb3859dcf1f97745a9a3848097219835359e16a2cd953d48212b3cf666f0ea
SSDEEP

12288:Efhcgyb1Qj5eeJe194GwyU0ao1SS5GMT4h3mOvud94f2:EfPySj5eEgw9oIS5JeWqud94f2

Score

10^/10

blustealer stormkitty collection stealer

Malware Config

Extracted

Family

blustealer

https://api.telegram.org/bot5617443580:AAFX8iYrXMCASkw95O815OVGuLWLdSgh8Qo/sendMessage?chat_id=5334267822

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/3156-155-0x0000000000B70000-0x0000000000B8A000-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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	doc 202209200099010100101.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\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
36	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1064 set thread context of 2276	1064	doc 202209200099010100101.exe	95
PID 2276 set thread context of 3156	2276	doc 202209200099010100101.exe	96

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

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

T1053

pid	Process
1992	schtasks.exe

Suspicious behavior: EnumeratesProcesses 18 IoCs

pid	Process
1064	doc 202209200099010100101.exe
1064	doc 202209200099010100101.exe
1064	doc 202209200099010100101.exe
1064	doc 202209200099010100101.exe
1064	doc 202209200099010100101.exe
1064	doc 202209200099010100101.exe
1064	doc 202209200099010100101.exe
1064	doc 202209200099010100101.exe
1064	doc 202209200099010100101.exe
1064	doc 202209200099010100101.exe
1064	doc 202209200099010100101.exe
1064	doc 202209200099010100101.exe
1064	doc 202209200099010100101.exe
1064	doc 202209200099010100101.exe
1064	doc 202209200099010100101.exe
1064	doc 202209200099010100101.exe
1816	powershell.exe
1816	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2276	doc 202209200099010100101.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1064	doc 202209200099010100101.exe
Token: SeDebugPrivilege	1816	powershell.exe
Token: SeDebugPrivilege	3156	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2276	doc 202209200099010100101.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 1064 wrote to memory of 1816	1064	doc 202209200099010100101.exe	88
PID 1064 wrote to memory of 1816	1064	doc 202209200099010100101.exe	88
PID 1064 wrote to memory of 1816	1064	doc 202209200099010100101.exe	88
PID 1064 wrote to memory of 1992	1064	doc 202209200099010100101.exe	90
PID 1064 wrote to memory of 1992	1064	doc 202209200099010100101.exe	90
PID 1064 wrote to memory of 1992	1064	doc 202209200099010100101.exe	90
PID 1064 wrote to memory of 3044	1064	doc 202209200099010100101.exe	92
PID 1064 wrote to memory of 3044	1064	doc 202209200099010100101.exe	92
PID 1064 wrote to memory of 3044	1064	doc 202209200099010100101.exe	92
PID 1064 wrote to memory of 4668	1064	doc 202209200099010100101.exe	93
PID 1064 wrote to memory of 4668	1064	doc 202209200099010100101.exe	93
PID 1064 wrote to memory of 4668	1064	doc 202209200099010100101.exe	93
PID 1064 wrote to memory of 3400	1064	doc 202209200099010100101.exe	94
PID 1064 wrote to memory of 3400	1064	doc 202209200099010100101.exe	94
PID 1064 wrote to memory of 3400	1064	doc 202209200099010100101.exe	94
PID 1064 wrote to memory of 2276	1064	doc 202209200099010100101.exe	95
PID 1064 wrote to memory of 2276	1064	doc 202209200099010100101.exe	95
PID 1064 wrote to memory of 2276	1064	doc 202209200099010100101.exe	95
PID 1064 wrote to memory of 2276	1064	doc 202209200099010100101.exe	95
PID 1064 wrote to memory of 2276	1064	doc 202209200099010100101.exe	95
PID 1064 wrote to memory of 2276	1064	doc 202209200099010100101.exe	95
PID 1064 wrote to memory of 2276	1064	doc 202209200099010100101.exe	95
PID 1064 wrote to memory of 2276	1064	doc 202209200099010100101.exe	95
PID 2276 wrote to memory of 3156	2276	doc 202209200099010100101.exe	96
PID 2276 wrote to memory of 3156	2276	doc 202209200099010100101.exe	96
PID 2276 wrote to memory of 3156	2276	doc 202209200099010100101.exe	96
PID 2276 wrote to memory of 3156	2276	doc 202209200099010100101.exe	96
PID 2276 wrote to memory of 3156	2276	doc 202209200099010100101.exe	96

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\doc 202209200099010100101.exe
"C:\Users\Admin\AppData\Local\Temp\doc 202209200099010100101.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1064
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\ZKauJhJCKAhpgs.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1816
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ZKauJhJCKAhpgs" /XML "C:\Users\Admin\AppData\Local\Temp\tmp56F5.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1992
- C:\Users\Admin\AppData\Local\Temp\doc 202209200099010100101.exe
  "C:\Users\Admin\AppData\Local\Temp\doc 202209200099010100101.exe"
  2⤵
  PID:3044
- C:\Users\Admin\AppData\Local\Temp\doc 202209200099010100101.exe
  "C:\Users\Admin\AppData\Local\Temp\doc 202209200099010100101.exe"
  2⤵
  PID:4668
- C:\Users\Admin\AppData\Local\Temp\doc 202209200099010100101.exe
  "C:\Users\Admin\AppData\Local\Temp\doc 202209200099010100101.exe"
  2⤵
  PID:3400
- C:\Users\Admin\AppData\Local\Temp\doc 202209200099010100101.exe
  "C:\Users\Admin\AppData\Local\Temp\doc 202209200099010100101.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2276
- - 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:3156

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp56F5.tmp

Filesize
1KB

MD5
b292277512bc2fdef3c44a67d973ae02

SHA1
346290c65c5e6f3d17c09f00d2a079236c97e66b

SHA256
5393dc0ffed8c770551333a60ece158fe1b1ef0a6b0b8622bfd71f8bc5d3c478

SHA512
58f6c4835b0633a4a3750536a70ca06ae3cb8544bb19a8e39d988b7d87a49bfa0f601bbbbea1c0315ebe21dda31ff2cac1f5a9b7eb19f92ff19e684abda44554

Download Submit
memory/1064-133-0x0000000005DA0000-0x0000000006344000-memory.dmp

Filesize
5.6MB

Download
memory/1064-134-0x0000000005710000-0x00000000057A2000-memory.dmp

Filesize
584KB

Download
memory/1064-135-0x0000000005700000-0x000000000570A000-memory.dmp

Filesize
40KB

Download
memory/1064-136-0x00000000016A0000-0x000000000173C000-memory.dmp

Filesize
624KB

Download
memory/1064-137-0x00000000095E0000-0x0000000009646000-memory.dmp

Filesize
408KB

Download
memory/1064-132-0x0000000000CB0000-0x0000000000D78000-memory.dmp

Filesize
800KB

Download
memory/1816-159-0x0000000070930000-0x000000007097C000-memory.dmp

Filesize
304KB

Download
memory/1816-163-0x0000000007300000-0x000000000730A000-memory.dmp

Filesize
40KB

Download
memory/1816-158-0x0000000006550000-0x0000000006582000-memory.dmp

Filesize
200KB

Download
memory/1816-167-0x00000000075B0000-0x00000000075B8000-memory.dmp

Filesize
32KB

Download
memory/1816-166-0x00000000075D0000-0x00000000075EA000-memory.dmp

Filesize
104KB

Download
memory/1816-165-0x00000000074C0000-0x00000000074CE000-memory.dmp

Filesize
56KB

Download
memory/1816-145-0x0000000005160000-0x0000000005788000-memory.dmp

Filesize
6.2MB

Download
memory/1816-140-0x00000000026A0000-0x00000000026D6000-memory.dmp

Filesize
216KB

Download
memory/1816-164-0x0000000007510000-0x00000000075A6000-memory.dmp

Filesize
600KB

Download
memory/1816-152-0x0000000004FC0000-0x0000000004FE2000-memory.dmp

Filesize
136KB

Download
memory/1816-153-0x0000000005060000-0x00000000050C6000-memory.dmp

Filesize
408KB

Download
memory/1816-162-0x0000000007290000-0x00000000072AA000-memory.dmp

Filesize
104KB

Download
memory/1816-161-0x00000000078E0000-0x0000000007F5A000-memory.dmp

Filesize
6.5MB

Download
memory/1816-156-0x0000000005E60000-0x0000000005E7E000-memory.dmp

Filesize
120KB

Download
memory/1816-160-0x0000000006530000-0x000000000654E000-memory.dmp

Filesize
120KB

Download
memory/2276-157-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2276-149-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2276-147-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/3156-155-0x0000000000B70000-0x0000000000B8A000-memory.dmp

Filesize
104KB

Download