a0f3c5e238704a9607296a93526a0a27f5732db3dc51b02e1baa83e8c5dc7875

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20260911-en
resource tags

arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
07/11/2026, 16:03

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General

Target
libcurl.dll
Size 4.2MB
Sample261107-thbb4aztew
SHA256 a0f3c5e238704a9607296a93526a0a27f5732db3dc51b02e1baa83e8c5dc7875
MD5 b03a89fe19cb2d688c269760d11888f6
SHA1 20f35ba48f902d2652390296136c04cf40c8da51
SHA512 69cbf5a8fbc9709c795e76ca34204f04c2e91e7c27d97ece7b9c4d3bdc9b72e576b243381d09fb6742d491a37c5e5beea9a17f9947e0d217be5daf168f1ce169
SSDEEP 24576:M2Si1TOKnvCcDX9yhYDio7cZTLC3ktfuRWEGMu:+iBlt0h67yO3kxu7
TLSH
T1A516B60B09865673DCEC47BB4CF2843169F629FDC8B74F90388D54709D9BAB528A235E
MD5 SHA1 SHA512 SSDEEP TLSH

Score

8^/10

execution

Malware Config

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
2156	powershell.exe
2904	powershell.exe
2156	powershell.exe
2904	powershell.exe

Executes dropped EXE 1 IoCs

pid	Process
4052	A5VsIOeciEAaJjI.exe

Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs

Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\VBoxMiniRdrDN	A5VsIOeciEAaJjI.exe

Executes a command shell one-liner 1 TTPs 1 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
2736	cmd.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2156	powershell.exe
2156	powershell.exe
2904	powershell.exe
2904	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2156	powershell.exe
Token: SeDebugPrivilege	2904	powershell.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 540 wrote to memory of 2156	540	rundll32.exe	85
PID 540 wrote to memory of 2904	540	rundll32.exe	87
PID 540 wrote to memory of 2736	540	rundll32.exe	89
PID 2736 wrote to memory of 1188	2736	cmd.exe	91
PID 540 wrote to memory of 4052	540	rundll32.exe	100

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\libcurl.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:540
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell.exe -NoProfile -ExecutionPolicy Bypass -WindowStyle Hidden -Command "Add-MpPreference -ExclusionPath $env:TEMP"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2156
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell.exe -NoProfile -ExecutionPolicy Bypass -WindowStyle Hidden -Command "Add-MpPreference -ExclusionPath 'C:\ProgramData','C:\ProgramData\Windows\Microsoft','C:\ProgramData\Microsoft\Windows'"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2904
- C:\Windows\system32\cmd.exe
  cmd.exe /C gpupdate /force
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:2736
- - C:\Windows\system32\gpupdate.exe
    gpupdate /force
    3⤵
    PID:1188
- C:\Users\Admin\AppData\Local\Temp\A5VsIOeciEAaJjI.exe
  "C:\Users\Admin\AppData\Local\Temp\A5VsIOeciEAaJjI.exe"
  2⤵
  - Executes dropped EXE
  - Checks for VirtualBox DLLs, possible anti-VM trick
  PID:4052

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Windows Command Shell

T1059.003

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

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 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
MD5 d85ba6ff808d9e5444a4b369f5bc2730
SHA1 31aa9d96590fff6981b315e0b391b575e4c0804a
SHA512 8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
TLSH
T1CE51EE323375B1E888167F071E681A8053BF4355EA94AF1CB698621ED93641B9F222F3
MD5 SHA1 SHA512 TLSH

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 5512157a9ea31f455e244922910fcdb2b8116288d968b0e5e26c91b266d4de7c
MD5 93771c301aacc738330a66a7e48b0c1b
SHA1 f7d7ac01f1f13620b1642d1638c1d212666abbae
SHA512 a51f43e335c8c6da130866115ee6d890f808379548b129e20e563c5ee0234cca186ecde4fd6bc609f0eba6e32b10d080f4f67483461cdd58ef0a60db78324309
TLSH
T1F8112223F78D8920CC96163A509DAC5172B686CB81EEDF9F7FC0C210A1BF584CB61294
MD5 SHA1 SHA512 TLSH

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A5VsIOeciEAaJjI.exe

Path C:\Users\Admin\AppData\Local\Temp\A5VsIOeciEAaJjI.exe
Size 499KB
SHA256 5593183916f579c9d8a7ede8c9ba21443834e1d59ad70d9f435bf35eae39c8bb
MD5 afa029538b30f849402999a5df8214be
SHA1 45e72630ab53f3b716b8224313aa1a4678e1e863
SHA512 75d568ba43c0543ac8c87beae83193eda145ae85b5199b27652a8fc2cb748ec96f7879cba8c730dcd94824a8ea3b7f305a7faa2fec40df261e98530c174afc77
SSDEEP 6144:tSBiPg9J8pKaHlafkFbG7KVnivCPDz8Ga/nwYyVa7lvZ/ctuTSQ+3xzD:tSBiMahZWKavUz
TLSH
T18EB4D763F2E23689E953C1389426D207BD7B3D410668FA236532DDD33A30F574B5BA1A
MD5 SHA1 SHA512 SSDEEP TLSH

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__PSScriptPolicyTest_xxx2q5es.2at.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_xxx2q5es.2at.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

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memory/2156-0-0x000001997BFE0000-0x000001997BFF0000-memory.dmp

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memory/2156-1-0x000001997BFE0000-0x000001997BFF0000-memory.dmp

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memory/2156-2-0x000001997E300000-0x000001997E322000-memory.dmp

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memory/2904-14-0x00000153E02F0000-0x00000153E0300000-memory.dmp

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memory/2904-13-0x00000153E02F0000-0x00000153E0300000-memory.dmp

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