blustealer | 03101293ef6b23593c4ff95a36528316a1d72c75568a9e9812a100dda87dead2

General

Target

INVOICE_.exe
Size

1.0MB
MD5

d01af08af1935589ed6974734f764f5a
SHA1

75d31c4f55e98d500abac8a5ab304a559283e9e5
SHA256

f7c5b46a0b80bd17ec7af21458bbc2cd7c0873f81218475013b50953a72a887f
SHA512

958a8efa7867077c7dbf66b21090d9186d4757e9f71895ed04ea48d6ba0f79b1a2d7789710921a15f0cdc5d83bf1d5d10260445982555e58bf96101aed026e7c
SSDEEP

24576:vXOGXrxgZIYdflxH28iLJ6fLOscta6VQz5CZporN2OtOzy:vX3rx43g8iLJkLOjs6VkCZ2x1

Score

10^/10

blustealer spyware stealer

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot6246601421:AAFrAwaqm-G2V9ysvgyBq2dzNs5Gp-CKwaw/sendMessage?chat_id=5523238206

Signatures

BluStealer
A Modular information stealer written in Visual Basic.
stealer blustealer

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-1-5-21-1529757233-3489015626-3409890339-1000\Control Panel\International\Geo\Nation	INVOICE_.exe

Loads dropped DLL 2 IoCs

pid	Process
2824	INVOICE_.exe
2824	INVOICE_.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4260 set thread context of 2824	4260	INVOICE_.exe	93
PID 2824 set thread context of 4564	2824	INVOICE_.exe	94

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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
3736	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4372	powershell.exe
4372	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2824	INVOICE_.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4372	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2824	INVOICE_.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 4260 wrote to memory of 4372	4260	INVOICE_.exe	89
PID 4260 wrote to memory of 4372	4260	INVOICE_.exe	89
PID 4260 wrote to memory of 4372	4260	INVOICE_.exe	89
PID 4260 wrote to memory of 3736	4260	INVOICE_.exe	91
PID 4260 wrote to memory of 3736	4260	INVOICE_.exe	91
PID 4260 wrote to memory of 3736	4260	INVOICE_.exe	91
PID 4260 wrote to memory of 2824	4260	INVOICE_.exe	93
PID 4260 wrote to memory of 2824	4260	INVOICE_.exe	93
PID 4260 wrote to memory of 2824	4260	INVOICE_.exe	93
PID 4260 wrote to memory of 2824	4260	INVOICE_.exe	93
PID 4260 wrote to memory of 2824	4260	INVOICE_.exe	93
PID 4260 wrote to memory of 2824	4260	INVOICE_.exe	93
PID 4260 wrote to memory of 2824	4260	INVOICE_.exe	93
PID 4260 wrote to memory of 2824	4260	INVOICE_.exe	93
PID 2824 wrote to memory of 4564	2824	INVOICE_.exe	94
PID 2824 wrote to memory of 4564	2824	INVOICE_.exe	94
PID 2824 wrote to memory of 4564	2824	INVOICE_.exe	94
PID 2824 wrote to memory of 4564	2824	INVOICE_.exe	94
PID 2824 wrote to memory of 4564	2824	INVOICE_.exe	94

C:\Users\Admin\AppData\Local\Temp\INVOICE_.exe
"C:\Users\Admin\AppData\Local\Temp\INVOICE_.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4260
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\PqhyBiwUgJm.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4372
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PqhyBiwUgJm" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6AFE.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:3736
- C:\Users\Admin\AppData\Local\Temp\INVOICE_.exe
  "C:\Users\Admin\AppData\Local\Temp\INVOICE_.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2824
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe
    C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe
    3⤵
    PID:4564

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

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_uwkuro0v.pvj.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp6AFE.tmp

Filesize
1KB

MD5
2e9b6c55b65cfbdc00a467bd7df69482

SHA1
09411ae559c7dae914ed66312919a99432d8d880

SHA256
4c4c398234d0c1ada5f22825b5670d1cef18a0c70dd5a9e912cade248a401545

SHA512
b954de42f05bae752105d8d670b8cf3dcdee4d855ce05d18fca356372a8a463a0389d9674a10ed756430390144dfa902f3313460f92456411b742d820a1c622d

Download Submit
C:\Users\Public\4246454246424646303030393036373242464246463030303930\SQLite3_StdCall.dll

Filesize
59KB

MD5
d77b227a28a78627c2323cac75948390

SHA1
e228c3951f2a9fd0febfe07390633ab4f35727f4

SHA256
527ec201dcd7695bd9830eb82ab35a3986121de9ea156193834aed9d79223b82

SHA512
5627fbc8bbb98f644e21f101a68f0e0b07b87c264d00ea227286bed8ab6dd4ebf5114f03b632604f775ff93666a409a1a179a81ebfc9246956ba8150ff5b0587

Download Submit
C:\Users\Public\4246454246424646303030393036373242464246463030303930\SQLite3_StdCall.dll

Filesize
59KB

MD5
d77b227a28a78627c2323cac75948390

SHA1
e228c3951f2a9fd0febfe07390633ab4f35727f4

SHA256
527ec201dcd7695bd9830eb82ab35a3986121de9ea156193834aed9d79223b82

SHA512
5627fbc8bbb98f644e21f101a68f0e0b07b87c264d00ea227286bed8ab6dd4ebf5114f03b632604f775ff93666a409a1a179a81ebfc9246956ba8150ff5b0587

Download Submit
C:\Users\Public\4246454246424646303030393036373242464246463030303930\SQLite3_StdCall.zip

Filesize
31KB

MD5
e91150a120a7d0b90c9541ddc35df2da

SHA1
8b218f7653cba01cd73a818de380e5b1018d1d40

SHA256
e96c6c2d75c1af719909fac9cbf1a63441052c0acc5bfff8e53d663dd0d7ee89

SHA512
3a796d7556799dee2bf2c0ee402b5ad39908ee2572f6e3a9dd78229d0f4e9d3f5236d0e1af08b6a0866189e219df03b0ed428a4b5dfb4ebdf585436615e66e28

Download Submit
C:\Users\Public\4246454246424646303030393036373242464246463030303930\sqlite3.dll

Filesize
585KB

MD5
5405413fff79b8d9c747aa900f60f082

SHA1
71caf8907ddd9a3a25d71356bd2ce09bd293bd78

SHA256
3e5a28ffde07ac661c26b6ccf94e64c1c90b1f25b3b24c90605aa922b87642eb

SHA512
2f09a30fc4da5166bd665210fefa1d44ce344f0ec6a37f127d677aeb3ca4fc0d09b7c9c1540f57da1e3449b7f588a1c61115395e965fa153d4baa5033266ed66

Download Submit
C:\Users\Public\4246454246424646303030393036373242464246463030303930\sqlite3.zip

Filesize
295KB

MD5
21765a296b37c1b074bc14316dc9d6cd

SHA1
c99c541d528ad6defe78970e90361d86ad5fa6ae

SHA256
c5a7d1d5f61a535aa511fc9b8119ff5103be48f97f89e123a138453c4aa5fc66

SHA512
5d3392d0f9ee7ed8d9471375ff5333554ca80b7dbe436c2bacb42c1ffe8a5c687835d58ae8425029f83500f43c19268b3315a5c43edb12b707df367e6b86ea0a

Download Submit
memory/2824-147-0x0000000000400000-0x0000000000496000-memory.dmp

Filesize
600KB

Download
memory/2824-151-0x0000000000400000-0x0000000000496000-memory.dmp

Filesize
600KB

Download
memory/2824-248-0x0000000000400000-0x0000000000496000-memory.dmp

Filesize
600KB

Download
memory/2824-247-0x0000000060900000-0x0000000060989000-memory.dmp

Filesize
548KB

Download
memory/2824-168-0x0000000000400000-0x0000000000496000-memory.dmp

Filesize
600KB

Download
memory/4260-136-0x0000000005AB0000-0x0000000005ABA000-memory.dmp

Filesize
40KB

Download
memory/4260-138-0x0000000005AA0000-0x0000000005AB0000-memory.dmp

Filesize
64KB

Download
memory/4260-133-0x0000000000E40000-0x0000000000F4E000-memory.dmp

Filesize
1.1MB

Download
memory/4260-134-0x0000000005DB0000-0x0000000006354000-memory.dmp

Filesize
5.6MB

Download
memory/4260-139-0x0000000007860000-0x00000000078FC000-memory.dmp

Filesize
624KB

Download
memory/4260-135-0x0000000005900000-0x0000000005992000-memory.dmp

Filesize
584KB

Download
memory/4260-137-0x0000000005AA0000-0x0000000005AB0000-memory.dmp

Filesize
64KB

Download
memory/4372-184-0x0000000007690000-0x00000000076AA000-memory.dmp

Filesize
104KB

Download
memory/4372-167-0x0000000006380000-0x000000000639E000-memory.dmp

Filesize
120KB

Download
memory/4372-170-0x0000000006950000-0x0000000006982000-memory.dmp

Filesize
200KB

Download
memory/4372-171-0x0000000070BA0000-0x0000000070BEC000-memory.dmp

Filesize
304KB

Download
memory/4372-181-0x0000000006930000-0x000000000694E000-memory.dmp

Filesize
120KB

Download
memory/4372-182-0x0000000007CD0000-0x000000000834A000-memory.dmp

Filesize
6.5MB

Download
memory/4372-152-0x0000000002AE0000-0x0000000002AF0000-memory.dmp

Filesize
64KB

Download
memory/4372-185-0x000000007F9A0000-0x000000007F9B0000-memory.dmp

Filesize
64KB

Download
memory/4372-150-0x0000000002AE0000-0x0000000002AF0000-memory.dmp

Filesize
64KB

Download
memory/4372-186-0x0000000007700000-0x000000000770A000-memory.dmp

Filesize
40KB

Download
memory/4372-205-0x0000000007910000-0x00000000079A6000-memory.dmp

Filesize
600KB

Download
memory/4372-169-0x0000000002AE0000-0x0000000002AF0000-memory.dmp

Filesize
64KB

Download
memory/4372-146-0x0000000005540000-0x0000000005B68000-memory.dmp

Filesize
6.2MB

Download
memory/4372-144-0x0000000002A90000-0x0000000002AC6000-memory.dmp

Filesize
216KB

Download
memory/4372-162-0x0000000005D70000-0x0000000005DD6000-memory.dmp

Filesize
408KB

Download
memory/4372-155-0x0000000005C90000-0x0000000005CF6000-memory.dmp

Filesize
408KB

Download
memory/4372-242-0x00000000078D0000-0x00000000078DE000-memory.dmp

Filesize
56KB

Download
memory/4372-243-0x00000000079D0000-0x00000000079EA000-memory.dmp

Filesize
104KB

Download
memory/4372-244-0x00000000079C0000-0x00000000079C8000-memory.dmp

Filesize
32KB

Download
memory/4372-153-0x0000000005BF0000-0x0000000005C12000-memory.dmp

Filesize
136KB

Download
memory/4564-229-0x00000000001E0000-0x00000000001EE000-memory.dmp

Filesize
56KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads