blustealer | c28daa1ae82a06070c34aa4380f4a8a29a5d9df77b2a8cbd339b765f3d5ac653

General

Target

SKM_36722091313070_0002_ 001.exe
Size

788KB
MD5

d58c21e4f1ab72dd6ab41ebcd6323018
SHA1

a3a3a195660e27240a7534e27221ba4335659c22
SHA256

c28daa1ae82a06070c34aa4380f4a8a29a5d9df77b2a8cbd339b765f3d5ac653
SHA512

6a82a569f53d325a43e8d9d705bca7cda51c62ae55e841df42a67d395fb017d22caa05559b8bd75164c41802ad202157fbfab8444ed28943f93f21cd0df7aca1
SSDEEP

6144:tYmWfih0m+3no6/PNLftxEt4q6GUrKk0KSX4+//SZ55986n73a0PPRroRI+mHw2E:tJYWGqHUp0DL/6ZG+DoR7mQYQHwKiEj

Score

10^/10

blustealer stormkitty collection stealer

Malware Config

Extracted

Family

blustealer

C2

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 4 IoCs

resource	yara_rule
behavioral1/memory/1536-78-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/1536-79-0x00000000000A4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/1536-81-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty
behavioral1/memory/1536-83-0x0000000000090000-0x00000000000AA000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\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
4	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1184 set thread context of 364	1184	SKM_36722091313070_0002_ 001.exe	30
PID 364 set thread context of 1536	364	SKM_36722091313070_0002_ 001.exe	31

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
2020	schtasks.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
1184	SKM_36722091313070_0002_ 001.exe
1184	SKM_36722091313070_0002_ 001.exe
1184	SKM_36722091313070_0002_ 001.exe
1184	SKM_36722091313070_0002_ 001.exe
1184	SKM_36722091313070_0002_ 001.exe
1184	SKM_36722091313070_0002_ 001.exe
856	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
364	SKM_36722091313070_0002_ 001.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1184	SKM_36722091313070_0002_ 001.exe
Token: SeDebugPrivilege	856	powershell.exe
Token: SeDebugPrivilege	1536	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
364	SKM_36722091313070_0002_ 001.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1184 wrote to memory of 856	1184	SKM_36722091313070_0002_ 001.exe	26
PID 1184 wrote to memory of 856	1184	SKM_36722091313070_0002_ 001.exe	26
PID 1184 wrote to memory of 856	1184	SKM_36722091313070_0002_ 001.exe	26
PID 1184 wrote to memory of 856	1184	SKM_36722091313070_0002_ 001.exe	26
PID 1184 wrote to memory of 2020	1184	SKM_36722091313070_0002_ 001.exe	28
PID 1184 wrote to memory of 2020	1184	SKM_36722091313070_0002_ 001.exe	28
PID 1184 wrote to memory of 2020	1184	SKM_36722091313070_0002_ 001.exe	28
PID 1184 wrote to memory of 2020	1184	SKM_36722091313070_0002_ 001.exe	28
PID 1184 wrote to memory of 364	1184	SKM_36722091313070_0002_ 001.exe	30
PID 1184 wrote to memory of 364	1184	SKM_36722091313070_0002_ 001.exe	30
PID 1184 wrote to memory of 364	1184	SKM_36722091313070_0002_ 001.exe	30
PID 1184 wrote to memory of 364	1184	SKM_36722091313070_0002_ 001.exe	30
PID 1184 wrote to memory of 364	1184	SKM_36722091313070_0002_ 001.exe	30
PID 1184 wrote to memory of 364	1184	SKM_36722091313070_0002_ 001.exe	30
PID 1184 wrote to memory of 364	1184	SKM_36722091313070_0002_ 001.exe	30
PID 1184 wrote to memory of 364	1184	SKM_36722091313070_0002_ 001.exe	30
PID 1184 wrote to memory of 364	1184	SKM_36722091313070_0002_ 001.exe	30
PID 364 wrote to memory of 1536	364	SKM_36722091313070_0002_ 001.exe	31
PID 364 wrote to memory of 1536	364	SKM_36722091313070_0002_ 001.exe	31
PID 364 wrote to memory of 1536	364	SKM_36722091313070_0002_ 001.exe	31
PID 364 wrote to memory of 1536	364	SKM_36722091313070_0002_ 001.exe	31
PID 364 wrote to memory of 1536	364	SKM_36722091313070_0002_ 001.exe	31
PID 364 wrote to memory of 1536	364	SKM_36722091313070_0002_ 001.exe	31
PID 364 wrote to memory of 1536	364	SKM_36722091313070_0002_ 001.exe	31
PID 364 wrote to memory of 1536	364	SKM_36722091313070_0002_ 001.exe	31
PID 364 wrote to memory of 1536	364	SKM_36722091313070_0002_ 001.exe	31

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\SKM_36722091313070_0002_ 001.exe
"C:\Users\Admin\AppData\Local\Temp\SKM_36722091313070_0002_ 001.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1184
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\EGSUxvTVA.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:856
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\EGSUxvTVA" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4210.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2020
- C:\Users\Admin\AppData\Local\Temp\SKM_36722091313070_0002_ 001.exe
  "C:\Users\Admin\AppData\Local\Temp\SKM_36722091313070_0002_ 001.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:364
- - 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:1536

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp4210.tmp

Filesize
1KB

MD5
a33fae2a882cdaa7d4670fd9afed4f18

SHA1
29ea383e215b70fb85b39bcaee3ab5282ba710a3

SHA256
7a206bb88a602780811761721bdffcc974f0626b4dd4c6129bb27e3523323b73

SHA512
9238e41e8bc308c0e8869fd242c796ac12dcdd003ceb58f1dfe3ed26c94e3e5795b22148fe15d452df86ee3ba0da9424a66e41fdf0b2c8ad34a55fb7f584c87c

Download Submit
memory/364-69-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/364-84-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/364-72-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/364-88-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/364-67-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/364-64-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/364-65-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/856-86-0x0000000074200000-0x00000000747AB000-memory.dmp

Filesize
5.7MB

Download
memory/856-87-0x0000000074200000-0x00000000747AB000-memory.dmp

Filesize
5.7MB

Download
memory/1184-58-0x0000000005CA0000-0x0000000005D22000-memory.dmp

Filesize
520KB

Download
memory/1184-63-0x00000000022B0000-0x00000000022DC000-memory.dmp

Filesize
176KB

Download
memory/1184-54-0x0000000000DC0000-0x0000000000E8C000-memory.dmp

Filesize
816KB

Download
memory/1184-57-0x0000000000210000-0x000000000021C000-memory.dmp

Filesize
48KB

Download
memory/1184-56-0x0000000000200000-0x0000000000216000-memory.dmp

Filesize
88KB

Download
memory/1184-55-0x0000000074BB1000-0x0000000074BB3000-memory.dmp

Filesize
8KB

Download
memory/1536-81-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1536-83-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1536-78-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download
memory/1536-76-0x0000000000090000-0x00000000000AA000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads