blustealer | cc0caa36bb40f1d15b6f338539239dc0fb978d38620e5f8d21b86a45e682e6e6

Analysis

max time kernel
153s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
06-03-2023 08:31

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General

Target

DOC00163936-pdf.exe
Size

1.4MB
MD5

d09bba5762384cc89632817f05a6e930
SHA1

c3cba9fb29262d1ea796c9c90e23b73db5077b32
SHA256

cc0caa36bb40f1d15b6f338539239dc0fb978d38620e5f8d21b86a45e682e6e6
SHA512

7c74adb802167f066d0cf1ff97fa36cbfacc30ca1a5c8d8f4116725011b260506dc6f1767a5ea1f149c3cf2840c6ac5ec4a438e9a1bfe84c446232e533ad99f1
SSDEEP

12288:/56S8U9J7BmsH6UstLIAYB9oiCRFx3HTQrZYeafOfXL2iTmwA4cX3MzSSV93QMOK:NoS6rtLlYlCbJ8RGOfJ04JSSDYs

Score

10^/10

blustealer stormkitty collection stealer

Malware Config

Extracted

Family

blustealer

https://api.telegram.org/bot5369570306:AAGakouymXOc8dp0WUuP_KaS81h9taRj_pk/sendMessage?chat_id=1884866272

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/3712-180-0x0000000000F30000-0x0000000000F4A000-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-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation	DOC00163936-pdf.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\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
54	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 808 set thread context of 4404	808	DOC00163936-pdf.exe	104
PID 4404 set thread context of 3712	4404	DOC00163936-pdf.exe	105

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
1532	schtasks.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
2060	powershell.exe
1392	powershell.exe
808	DOC00163936-pdf.exe
808	DOC00163936-pdf.exe
808	DOC00163936-pdf.exe
808	DOC00163936-pdf.exe
808	DOC00163936-pdf.exe
808	DOC00163936-pdf.exe
808	DOC00163936-pdf.exe
808	DOC00163936-pdf.exe
1392	powershell.exe
2060	powershell.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2060	powershell.exe
Token: SeDebugPrivilege	1392	powershell.exe
Token: SeDebugPrivilege	808	DOC00163936-pdf.exe
Token: SeDebugPrivilege	3712	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4404	DOC00163936-pdf.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 808 wrote to memory of 1392	808	DOC00163936-pdf.exe	94
PID 808 wrote to memory of 1392	808	DOC00163936-pdf.exe	94
PID 808 wrote to memory of 1392	808	DOC00163936-pdf.exe	94
PID 808 wrote to memory of 2060	808	DOC00163936-pdf.exe	96
PID 808 wrote to memory of 2060	808	DOC00163936-pdf.exe	96
PID 808 wrote to memory of 2060	808	DOC00163936-pdf.exe	96
PID 808 wrote to memory of 1532	808	DOC00163936-pdf.exe	98
PID 808 wrote to memory of 1532	808	DOC00163936-pdf.exe	98
PID 808 wrote to memory of 1532	808	DOC00163936-pdf.exe	98
PID 808 wrote to memory of 1808	808	DOC00163936-pdf.exe	100
PID 808 wrote to memory of 1808	808	DOC00163936-pdf.exe	100
PID 808 wrote to memory of 1808	808	DOC00163936-pdf.exe	100
PID 808 wrote to memory of 452	808	DOC00163936-pdf.exe	101
PID 808 wrote to memory of 452	808	DOC00163936-pdf.exe	101
PID 808 wrote to memory of 452	808	DOC00163936-pdf.exe	101
PID 808 wrote to memory of 1996	808	DOC00163936-pdf.exe	102
PID 808 wrote to memory of 1996	808	DOC00163936-pdf.exe	102
PID 808 wrote to memory of 1996	808	DOC00163936-pdf.exe	102
PID 808 wrote to memory of 1884	808	DOC00163936-pdf.exe	103
PID 808 wrote to memory of 1884	808	DOC00163936-pdf.exe	103
PID 808 wrote to memory of 1884	808	DOC00163936-pdf.exe	103
PID 808 wrote to memory of 4404	808	DOC00163936-pdf.exe	104
PID 808 wrote to memory of 4404	808	DOC00163936-pdf.exe	104
PID 808 wrote to memory of 4404	808	DOC00163936-pdf.exe	104
PID 808 wrote to memory of 4404	808	DOC00163936-pdf.exe	104
PID 808 wrote to memory of 4404	808	DOC00163936-pdf.exe	104
PID 808 wrote to memory of 4404	808	DOC00163936-pdf.exe	104
PID 808 wrote to memory of 4404	808	DOC00163936-pdf.exe	104
PID 808 wrote to memory of 4404	808	DOC00163936-pdf.exe	104
PID 4404 wrote to memory of 3712	4404	DOC00163936-pdf.exe	105
PID 4404 wrote to memory of 3712	4404	DOC00163936-pdf.exe	105
PID 4404 wrote to memory of 3712	4404	DOC00163936-pdf.exe	105
PID 4404 wrote to memory of 3712	4404	DOC00163936-pdf.exe	105
PID 4404 wrote to memory of 3712	4404	DOC00163936-pdf.exe	105

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\DOC00163936-pdf.exe
"C:\Users\Admin\AppData\Local\Temp\DOC00163936-pdf.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:808
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\DOC00163936-pdf.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1392
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\QxzUfmxdkbta.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2060
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QxzUfmxdkbta" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9C40.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1532
- C:\Users\Admin\AppData\Local\Temp\DOC00163936-pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\DOC00163936-pdf.exe"
  2⤵
  PID:1808
- C:\Users\Admin\AppData\Local\Temp\DOC00163936-pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\DOC00163936-pdf.exe"
  2⤵
  PID:452
- C:\Users\Admin\AppData\Local\Temp\DOC00163936-pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\DOC00163936-pdf.exe"
  2⤵
  PID:1996
- C:\Users\Admin\AppData\Local\Temp\DOC00163936-pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\DOC00163936-pdf.exe"
  2⤵
  PID:1884
- C:\Users\Admin\AppData\Local\Temp\DOC00163936-pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\DOC00163936-pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4404
- - 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:3712

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\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
3d086a433708053f9bf9523e1d87a4e8

SHA1
b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28

SHA256
6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69

SHA512
931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5avf3ict.0u2.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp9C40.tmp

Filesize
1KB

MD5
5607bf8b41a1562c13244a06f323b363

SHA1
3e8e884ad9b3d832a56025cc690dba124585d6f9

SHA256
eb9fc4cc76ceb48e1414e9ae340b2b061e718692259dc85e3dd5c50a033ff40d

SHA512
d9f0ae545fe574f2fc4ffc23e465d42c79cfba5496505592c7dfa8c0587ad495cde4e591bca33be678e8e1267690cda67032f2a5d0fc7861331c472f8c252d33

Download Submit
memory/808-138-0x0000000005810000-0x0000000005820000-memory.dmp

Filesize
64KB

Download
memory/808-135-0x0000000005600000-0x0000000005692000-memory.dmp

Filesize
584KB

Download
memory/808-139-0x0000000006EF0000-0x0000000006F8C000-memory.dmp

Filesize
624KB

Download
memory/808-134-0x0000000005AD0000-0x0000000006074000-memory.dmp

Filesize
5.6MB

Download
memory/808-137-0x00000000055F0000-0x00000000055FA000-memory.dmp

Filesize
40KB

Download
memory/808-136-0x0000000005810000-0x0000000005820000-memory.dmp

Filesize
64KB

Download
memory/808-133-0x0000000000AD0000-0x0000000000C3A000-memory.dmp

Filesize
1.4MB

Download
memory/1392-161-0x0000000005730000-0x0000000005796000-memory.dmp

Filesize
408KB

Download
memory/1392-153-0x00000000056C0000-0x0000000005726000-memory.dmp

Filesize
408KB

Download
memory/1392-183-0x0000000071A20000-0x0000000071A6C000-memory.dmp

Filesize
304KB

Download
memory/1392-163-0x0000000002590000-0x00000000025A0000-memory.dmp

Filesize
64KB

Download
memory/1392-144-0x0000000002490000-0x00000000024C6000-memory.dmp

Filesize
216KB

Download
memory/1392-210-0x0000000007330000-0x00000000073C6000-memory.dmp

Filesize
600KB

Download
memory/1392-205-0x0000000007700000-0x0000000007D7A000-memory.dmp

Filesize
6.5MB

Download
memory/1392-155-0x0000000002590000-0x00000000025A0000-memory.dmp

Filesize
64KB

Download
memory/1392-207-0x000000007FAA0000-0x000000007FAB0000-memory.dmp

Filesize
64KB

Download
memory/1392-204-0x0000000002590000-0x00000000025A0000-memory.dmp

Filesize
64KB

Download
memory/2060-147-0x00000000057E0000-0x0000000005802000-memory.dmp

Filesize
136KB

Download
memory/2060-175-0x0000000002660000-0x0000000002670000-memory.dmp

Filesize
64KB

Download
memory/2060-181-0x0000000002660000-0x0000000002670000-memory.dmp

Filesize
64KB

Download
memory/2060-182-0x00000000065C0000-0x00000000065F2000-memory.dmp

Filesize
200KB

Download
memory/2060-184-0x0000000071A20000-0x0000000071A6C000-memory.dmp

Filesize
304KB

Download
memory/2060-145-0x00000000051B0000-0x00000000057D8000-memory.dmp

Filesize
6.2MB

Download
memory/2060-194-0x00000000065A0000-0x00000000065BE000-memory.dmp

Filesize
120KB

Download
memory/2060-178-0x0000000006000000-0x000000000601E000-memory.dmp

Filesize
120KB

Download
memory/2060-206-0x0000000007300000-0x000000000731A000-memory.dmp

Filesize
104KB

Download
memory/2060-173-0x0000000002660000-0x0000000002670000-memory.dmp

Filesize
64KB

Download
memory/2060-208-0x000000007F500000-0x000000007F510000-memory.dmp

Filesize
64KB

Download
memory/2060-215-0x0000000007620000-0x0000000007628000-memory.dmp

Filesize
32KB

Download
memory/2060-209-0x0000000007370000-0x000000000737A000-memory.dmp

Filesize
40KB

Download
memory/2060-214-0x0000000007640000-0x000000000765A000-memory.dmp

Filesize
104KB

Download
memory/2060-212-0x0000000007530000-0x000000000753E000-memory.dmp

Filesize
56KB

Download
memory/3712-211-0x00000000054E0000-0x00000000054F0000-memory.dmp

Filesize
64KB

Download
memory/3712-180-0x0000000000F30000-0x0000000000F4A000-memory.dmp

Filesize
104KB

Download
memory/4404-174-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4404-154-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4404-179-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4404-221-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download