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 1 IoCs

resource	yara_rule
behavioral2/memory/2168-153-0x0000000000FB0000-0x0000000000FCA000-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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	SKM_36722091313070_0002_ 001.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\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 764 set thread context of 3360	764	SKM_36722091313070_0002_ 001.exe	93
PID 3360 set thread context of 2168	3360	SKM_36722091313070_0002_ 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

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
3500	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
764	SKM_36722091313070_0002_ 001.exe
764	SKM_36722091313070_0002_ 001.exe
764	SKM_36722091313070_0002_ 001.exe
764	SKM_36722091313070_0002_ 001.exe
764	SKM_36722091313070_0002_ 001.exe
764	SKM_36722091313070_0002_ 001.exe
3660	powershell.exe
3660	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3360	SKM_36722091313070_0002_ 001.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	764	SKM_36722091313070_0002_ 001.exe
Token: SeDebugPrivilege	3660	powershell.exe
Token: SeDebugPrivilege	2168	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3360	SKM_36722091313070_0002_ 001.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 764 wrote to memory of 3660	764	SKM_36722091313070_0002_ 001.exe	89
PID 764 wrote to memory of 3660	764	SKM_36722091313070_0002_ 001.exe	89
PID 764 wrote to memory of 3660	764	SKM_36722091313070_0002_ 001.exe	89
PID 764 wrote to memory of 3500	764	SKM_36722091313070_0002_ 001.exe	91
PID 764 wrote to memory of 3500	764	SKM_36722091313070_0002_ 001.exe	91
PID 764 wrote to memory of 3500	764	SKM_36722091313070_0002_ 001.exe	91
PID 764 wrote to memory of 3360	764	SKM_36722091313070_0002_ 001.exe	93
PID 764 wrote to memory of 3360	764	SKM_36722091313070_0002_ 001.exe	93
PID 764 wrote to memory of 3360	764	SKM_36722091313070_0002_ 001.exe	93
PID 764 wrote to memory of 3360	764	SKM_36722091313070_0002_ 001.exe	93
PID 764 wrote to memory of 3360	764	SKM_36722091313070_0002_ 001.exe	93
PID 764 wrote to memory of 3360	764	SKM_36722091313070_0002_ 001.exe	93
PID 764 wrote to memory of 3360	764	SKM_36722091313070_0002_ 001.exe	93
PID 764 wrote to memory of 3360	764	SKM_36722091313070_0002_ 001.exe	93
PID 3360 wrote to memory of 2168	3360	SKM_36722091313070_0002_ 001.exe	94
PID 3360 wrote to memory of 2168	3360	SKM_36722091313070_0002_ 001.exe	94
PID 3360 wrote to memory of 2168	3360	SKM_36722091313070_0002_ 001.exe	94
PID 3360 wrote to memory of 2168	3360	SKM_36722091313070_0002_ 001.exe	94
PID 3360 wrote to memory of 2168	3360	SKM_36722091313070_0002_ 001.exe	94

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\SKM_36722091313070_0002_ 001.exe
"C:\Users\Admin\AppData\Local\Temp\SKM_36722091313070_0002_ 001.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:764
- 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:3660
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\EGSUxvTVA" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3C5D.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:3500
- 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:3360
- - 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:2168

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

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp3C5D.tmp

Filesize
1KB

MD5
6b8dfb87b3bb806264809aa753b78849

SHA1
c30f39cbbc3f3e29d74ae718a6c84ef3497078bd

SHA256
a46586a69e8e4f77a382efe392df14354a6872c2a58870a7624c4a86f4767065

SHA512
e9f65c576e9c671e87c7e0d98470e457d837f8a052756a845870192f6d43addda1d12680d296dc4c796dc834655efccb0348145976bc586c7775184afc7bd69c

Download Submit
memory/764-135-0x0000000005460000-0x000000000546A000-memory.dmp

Filesize
40KB

Download
memory/764-134-0x00000000054D0000-0x0000000005562000-memory.dmp

Filesize
584KB

Download
memory/764-132-0x0000000000A00000-0x0000000000ACC000-memory.dmp

Filesize
816KB

Download
memory/764-136-0x0000000009120000-0x00000000091BC000-memory.dmp

Filesize
624KB

Download
memory/764-137-0x0000000009550000-0x00000000095B6000-memory.dmp

Filesize
408KB

Download
memory/764-133-0x0000000005A80000-0x0000000006024000-memory.dmp

Filesize
5.6MB

Download
memory/2168-153-0x0000000000FB0000-0x0000000000FCA000-memory.dmp

Filesize
104KB

Download
memory/3360-165-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/3360-143-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/3360-146-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/3360-151-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/3660-147-0x0000000005460000-0x0000000005482000-memory.dmp

Filesize
136KB

Download
memory/3660-157-0x0000000006AE0000-0x0000000006AFE000-memory.dmp

Filesize
120KB

Download
memory/3660-144-0x0000000005810000-0x0000000005E38000-memory.dmp

Filesize
6.2MB

Download
memory/3660-140-0x0000000002C00000-0x0000000002C36000-memory.dmp

Filesize
216KB

Download
memory/3660-154-0x0000000006530000-0x000000000654E000-memory.dmp

Filesize
120KB

Download
memory/3660-155-0x00000000076E0000-0x0000000007712000-memory.dmp

Filesize
200KB

Download
memory/3660-156-0x00000000715D0000-0x000000007161C000-memory.dmp

Filesize
304KB

Download
memory/3660-149-0x0000000005500000-0x0000000005566000-memory.dmp

Filesize
408KB

Download
memory/3660-158-0x0000000007E90000-0x000000000850A000-memory.dmp

Filesize
6.5MB

Download
memory/3660-159-0x0000000007840000-0x000000000785A000-memory.dmp

Filesize
104KB

Download
memory/3660-160-0x00000000078B0000-0x00000000078BA000-memory.dmp

Filesize
40KB

Download
memory/3660-161-0x0000000007AC0000-0x0000000007B56000-memory.dmp

Filesize
600KB

Download
memory/3660-162-0x0000000007A70000-0x0000000007A7E000-memory.dmp

Filesize
56KB

Download
memory/3660-163-0x0000000007B80000-0x0000000007B9A000-memory.dmp

Filesize
104KB

Download
memory/3660-164-0x0000000007B60000-0x0000000007B68000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads