1e934d796c27c341542064a317fafaaea48d9c8184cb024dcbf84b18a2348d38

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20260911-en
resource tags

arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
17/09/2026, 15:01

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General

Target
Chase Bank_Payment Advice.pdf.js
Size 61KB
Sample260917-sd2g2sfd47
SHA256 1e934d796c27c341542064a317fafaaea48d9c8184cb024dcbf84b18a2348d38
MD5 e7bd44b4dd5f0935a8f6f0590feb5f1b
SHA1 fb2afad8b8f0ef9c2a8feb9f8e9a4802bc1bb23c
SHA512 d543b4cf5d84543040a92052784379e36aecbd2b07b46ae128773f7331daf37b2a7c9a41ef79d405e1bbcb206cce4ff796a8739e3d056d0619a985339cedf649
SSDEEP 1536:3xmyMcO0H4DomUBIRjEjJ7ft7C7k7s7b77:CcO08omUBIRjEjlRMOWv7
TLSH
T16B534F07A3877BDCCA07728C8AC6932D95B46C154421B8D165EAD5EEEE6D83013FF227
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

defense_evasion execution

Malware Config

Signatures

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3588	1940	cmd.exe	87

Badlisted process makes network request 4 IoCs

Network request originating from process or tool commonly abused by malware.

flow	pid	Process
18	384	powershell.exe
19	384	powershell.exe
21	384	powershell.exe
30	384	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
4784	powershell.exe

SmartAssembly .NET packer 1 IoCs

Detects SmartAssembly .NET packer.

resource	yara_rule
behavioral1/memory/384-27-0x000001872FBF0000-0x000001872FC22000-memory.dmp	SmartAssembly

Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007

Executes a command shell one-liner 1 TTPs 2 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
3588	cmd.exe
4772	cmd.exe

Kills process with taskkill 3 IoCs

defense_evasion

pid	Process
1184	taskkill.exe
4408	taskkill.exe
4076	taskkill.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
384	powershell.exe
384	powershell.exe
4784	powershell.exe
4784	powershell.exe
384	powershell.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	384	powershell.exe
Token: SeDebugPrivilege	4784	powershell.exe
Token: SeDebugPrivilege	1184	taskkill.exe
Token: SeDebugPrivilege	4408	taskkill.exe
Token: SeDebugPrivilege	4076	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3588 wrote to memory of 384	3588	cmd.exe	91
PID 384 wrote to memory of 4616	384	powershell.exe	94
PID 4616 wrote to memory of 4764	4616	csc.exe	95
PID 384 wrote to memory of 4784	384	powershell.exe	96
PID 4784 wrote to memory of 4772	4784	powershell.exe	98
PID 4772 wrote to memory of 1184	4772	cmd.exe	100
PID 4772 wrote to memory of 4408	4772	cmd.exe	101
PID 4772 wrote to memory of 4076	4772	cmd.exe	103

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\Chase Bank_Payment Advice.pdf.js"
1⤵
PID:3804

C:\Windows\system32\cmd.exe
cmd /c %SYSTEMROOT%\System32\WindowsPowerShell\v1.0\powershell.exe .($env:ComSpec[4,26,25]-join'') $env:dkkomoigz;
1⤵
- Process spawned unexpected child process
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
PID:3588
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe .($env:ComSpec[4,26,25]-join'') $env:dkkomoigz;
  2⤵
  - Badlisted process makes network request
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:384
- - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
    "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\pkvseyso\pkvseyso.cmdline"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4616
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
      C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES8A97.tmp" "c:\Users\Admin\AppData\Local\Temp\pkvseyso\CSC827ED0898CA34D7B96526474BFF21F3B.TMP"
      4⤵
      PID:4764
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Start-Process cmd.exe -ArgumentList '/c taskkill /IM RegAsm.exe /F & taskkill /IM Vbc.exe /F & taskkill /IM MsBuild.exe /F' -WindowStyle Hidden -Wait
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4784
  - - C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe" /c taskkill /IM RegAsm.exe /F & taskkill /IM Vbc.exe /F & taskkill /IM MsBuild.exe /F
      4⤵
      Executes a command shell one-liner
      Suspicious use of WriteProcessMemory
      PID:4772
    - - C:\Windows\system32\taskkill.exe
        
        taskkill /IM RegAsm.exe /F
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1184
    - - C:\Windows\system32\taskkill.exe
        
        taskkill /IM Vbc.exe /F
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:4408
    - - C:\Windows\system32\taskkill.exe
        
        taskkill /IM MsBuild.exe /F
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:4076

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

JavaScript

T1059.007

PowerShell

T1059.001

Windows Command Shell

T1059.003

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

powershell.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Size 2KB
SHA256 b1f292b6199aa29c7fafbca007e5f9e3f68edcbbca1965bc828cc92dc0f18bb8
MD5 6cf293cb4d80be23433eecf74ddb5503
SHA1 24fe4752df102c2ef492954d6b046cb5512ad408
SHA512 0f91e2da0da8794b9797c7b50eb5dfd27bde4546ceb6902a776664ce887dd6f12a0dd8773d612ccc76dfd029cd280778a0f0ae17ce679b3d2ffd968dd7e94a00
TLSH
T148510F323375F1E4C8567F071E68198053BF4395EA94AF5CB298621ED92741B8F222F3
MD5 SHA1 SHA512 TLSH

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 1KB
SHA256 4309ca1b9a39ee1570fa25b1058119d776baa407e11c2c636cac70de59e8be77
MD5 3b77eb00c08089bda005cd037b4fca35
SHA1 56ba75f86227fade4872f43c3beaae678eb22f3d
SHA512 873552b0ab7b7c7f4ef3a6a2ca89a2c28505ca1635aa5d7ca41f37bca51d6e45505024ffd57fc8b23ebe71000e9f7633cb0809c625b5285b2cfbf0a7979893f8
TLSH
T14A317733F39CC921C88A117A149E9C00767183D7419ECE9FABC5D614A17F998CB615A4
MD5 SHA1 SHA512 TLSH

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RES8A97.tmp

Path C:\Users\Admin\AppData\Local\Temp\RES8A97.tmp
Size 1KB
SHA256 4962a93c6d56fd83514f405ebeb59fc634a1de7595cf74450c56ca4fb398980c
MD5 2ce658bdb4761111cbfa640ab435e4d2
SHA1 30591b0a4d9d87c3c0331061a4570da3ccd73e97
SHA512 f06617607d12a7ede6c0908338ef4f5e603e85b980390173107ea83783c7e1713cbb35bbbb8c5c1d65218d218dc7abc8d9d7815e0d17f15900a45203b872602b
TLSH
T139217B0553E9471EF0B75F3169FA172BA679FD59EF62535B844042292C41104EEB0FB2
MD5 SHA1 SHA512 TLSH

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__PSScriptPolicyTest_l4sdt0yl.zku.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_l4sdt0yl.zku.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

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pkvseyso.dll

Path C:\Users\Admin\AppData\Local\Temp\pkvseyso\pkvseyso.dll
Size 3KB
SHA256 4c088cb2d3d5983265655e13f4ef6a925a9c85b913f6a933470d0a55dfb2e282
MD5 c37bc20ab94bf1f15df5070be71fa46e
SHA1 b9526a249f5373a36cc14f4ba34df3a1af56052c
SHA512 372af55713c2864a68f70786436291569c1ff9116619591e4a75b3fe4f29c8568c4327800cd1c5f52fc050e6286aca1fae8bf97a5a27fd5341287f0a7d265a9d
TLSH
T1EB51CD1663E8466BE8B70B317EF743572774F920AF62535D48800279AC213646E32FB6
MD5 SHA1 SHA512 TLSH

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CSC827ED0898CA34D7B96526474BFF21F3B.TMP

Path \??\c:\Users\Admin\AppData\Local\Temp\pkvseyso\CSC827ED0898CA34D7B96526474BFF21F3B.TMP
Size 652B
SHA256 e19cab74f66fed95cb89adb8366b3e485aa55788da06249440e490c0c43620e1
MD5 1f75ce28d4ad4a251d881e5825659f4d
SHA1 511862456c57b3cf73092f752b58c9c207201c08
SHA512 709cc67a06735b762d68167d8cadcfe318ed1e0933a7eb0a18958b6719a9c200280e3a766234194c8dda14f0108eef9129e15ed03f21a794a8217df2aba64f2b
TLSH
T16CF05E4963F8020EF0F74F30BDF6436395A9BC64DE3293ED144003292864510D972FB2
MD5 SHA1 SHA512 TLSH

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pkvseyso.0.cs

Path \??\c:\Users\Admin\AppData\Local\Temp\pkvseyso\pkvseyso.0.cs
Size 213B
SHA256 a0fdb9548ff75cbf48acee5affaa578eb60798807cb792da4d9640cfb371f157
MD5 5406714dfd58ae688d2c3b98082fab53
SHA1 7661a7744b9c40379bb479ff527fc8923696cf11
SHA512 7f0c60c8508a7fe17edd1f08b9207464d8471f07d563acd20a7d971fc249731a4851b7d1a2000ffce1da712a55a8d161511b409bf985b4bf9a60bc83d5a3ccc7
TLSH
T1FDD0A9803686F3384B9305073C03B89A223FA71103EA6408D86A0C83EE08070BB38C2E
MD5 SHA1 SHA512 TLSH

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pkvseyso.cmdline

Path \??\c:\Users\Admin\AppData\Local\Temp\pkvseyso\pkvseyso.cmdline
Size 369B
SHA256 dac66f081f34a21817efd9104f9febd57eaa1d249c4fdc9a1c4cc779602136c2
MD5 3bbef1969fbf9e5719c39a32793cbb14
SHA1 99b9e9f10965eb0e7056a6b013390b00895d8ef9
SHA512 ecefae382798e68a9302bf07f580b3abe3dcdf3f862cf709b960a24ba7dcaac9cfedbb3b48e2b0dd3a468daf2cfd403404a6b9bec80ef23da38bef9dbef6b25f
TLSH
T12FE0C03B8247CE7D0EDD12072169C4ACCE72174329423F8C5180480DE4179002BD1782
MD5 SHA1 SHA512 TLSH

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memory/384-0-0x0000018715220000-0x0000018715230000-memory.dmp

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memory/384-22-0x00000187153A0000-0x00000187153A8000-memory.dmp

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memory/384-23-0x0000018715220000-0x0000018715230000-memory.dmp

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memory/384-25-0x0000018715220000-0x0000018715230000-memory.dmp

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memory/384-24-0x000001872F890000-0x000001872FAAC000-memory.dmp

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memory/384-27-0x000001872FBF0000-0x000001872FC22000-memory.dmp

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memory/384-9-0x0000018715220000-0x0000018715230000-memory.dmp

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memory/384-2-0x0000018715370000-0x0000018715392000-memory.dmp

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memory/4784-37-0x000002036A9D0000-0x000002036ABEC000-memory.dmp

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