727f09e37d8f54a1ede12bf8bc0ce9f8edddcd6d130e6a0802963cfc60ec8c17

Analysis

max time kernel
142s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
25-12-2023 04:05

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General

Target

04758d397c81638f9146e4b54849e68f.exe
Size

220KB
MD5

04758d397c81638f9146e4b54849e68f
SHA1

61c42b655952a846737e079f72c83e73f05d3c29
SHA256

727f09e37d8f54a1ede12bf8bc0ce9f8edddcd6d130e6a0802963cfc60ec8c17
SHA512

c393087274f282686124bc445460426241231ff7b95afb76ea8146836e77b0123baecc248734d78034618d812e3ffe9613b50567b545b36694ea9f25d6e997d4
SSDEEP

3072:yOkEXFtVI7huijyivefSjIeVXcJZn+ehHcNeBS1SNmiH3jDfRtoJpUCIwZ1ApqKw:fkEXFtV6nFxXcJZkNe6fQB2zUDw

Score

8^/10

evasion persistence

Malware Config

Signatures

Creates new service(s) 1 TTPs
persistence

Windows Service
T1543.003

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\drivers\imapioko.sys	04758d397c81638f9146e4b54849e68f.exe.exe

Modifies Windows Firewall 1 TTPs 2 IoCs

evasion

Windows Service

T1543.003

pid	Process
4216	netsh.exe
4960	netsh.exe

Sets DLL path for service in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\cpqoko6\Parameters\ServiceDll = "C:\\Windows\\system32\\erokosvc.dll"	reg.exe

Executes dropped EXE 1 IoCs

pid	Process
2064	04758d397c81638f9146e4b54849e68f.exe.exe

Loads dropped DLL 1 IoCs

pid	Process
3900	svchost.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\erokosvc.dll	04758d397c81638f9146e4b54849e68f.exe.exe

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
3304	sc.exe
2372	sc.exe
1856	sc.exe

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
4336	ipconfig.exe

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Main\TP = "1000"	reg.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Main	reg.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
660	Process not Found

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3900	svchost.exe

Suspicious use of WriteProcessMemory 42 IoCs

description	pid	Process	procid_target
PID 4488 wrote to memory of 216	4488	04758d397c81638f9146e4b54849e68f.exe	92
PID 4488 wrote to memory of 216	4488	04758d397c81638f9146e4b54849e68f.exe	92
PID 4488 wrote to memory of 216	4488	04758d397c81638f9146e4b54849e68f.exe	92
PID 4488 wrote to memory of 3384	4488	04758d397c81638f9146e4b54849e68f.exe	96
PID 4488 wrote to memory of 3384	4488	04758d397c81638f9146e4b54849e68f.exe	96
PID 4488 wrote to memory of 3384	4488	04758d397c81638f9146e4b54849e68f.exe	96
PID 3384 wrote to memory of 2064	3384	CmD.exe	98
PID 3384 wrote to memory of 2064	3384	CmD.exe	98
PID 3384 wrote to memory of 2064	3384	CmD.exe	98
PID 4488 wrote to memory of 4776	4488	04758d397c81638f9146e4b54849e68f.exe	105
PID 4488 wrote to memory of 4776	4488	04758d397c81638f9146e4b54849e68f.exe	105
PID 4488 wrote to memory of 4776	4488	04758d397c81638f9146e4b54849e68f.exe	105
PID 4776 wrote to memory of 4456	4776	cMd.exe	107
PID 4776 wrote to memory of 4456	4776	cMd.exe	107
PID 4776 wrote to memory of 4456	4776	cMd.exe	107
PID 4776 wrote to memory of 4216	4776	cMd.exe	108
PID 4776 wrote to memory of 4216	4776	cMd.exe	108
PID 4776 wrote to memory of 4216	4776	cMd.exe	108
PID 4776 wrote to memory of 4960	4776	cMd.exe	109
PID 4776 wrote to memory of 4960	4776	cMd.exe	109
PID 4776 wrote to memory of 4960	4776	cMd.exe	109
PID 4776 wrote to memory of 3304	4776	cMd.exe	110
PID 4776 wrote to memory of 3304	4776	cMd.exe	110
PID 4776 wrote to memory of 3304	4776	cMd.exe	110
PID 4776 wrote to memory of 1096	4776	cMd.exe	111
PID 4776 wrote to memory of 1096	4776	cMd.exe	111
PID 4776 wrote to memory of 1096	4776	cMd.exe	111
PID 4776 wrote to memory of 4580	4776	cMd.exe	112
PID 4776 wrote to memory of 4580	4776	cMd.exe	112
PID 4776 wrote to memory of 4580	4776	cMd.exe	112
PID 4776 wrote to memory of 3104	4776	cMd.exe	113
PID 4776 wrote to memory of 3104	4776	cMd.exe	113
PID 4776 wrote to memory of 3104	4776	cMd.exe	113
PID 4776 wrote to memory of 2372	4776	cMd.exe	114
PID 4776 wrote to memory of 2372	4776	cMd.exe	114
PID 4776 wrote to memory of 2372	4776	cMd.exe	114
PID 4776 wrote to memory of 1856	4776	cMd.exe	116
PID 4776 wrote to memory of 1856	4776	cMd.exe	116
PID 4776 wrote to memory of 1856	4776	cMd.exe	116
PID 4776 wrote to memory of 4336	4776	cMd.exe	117
PID 4776 wrote to memory of 4336	4776	cMd.exe	117
PID 4776 wrote to memory of 4336	4776	cMd.exe	117

C:\Users\Admin\AppData\Local\Temp\04758d397c81638f9146e4b54849e68f.exe
"C:\Users\Admin\AppData\Local\Temp\04758d397c81638f9146e4b54849e68f.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4488
- C:\Windows\SysWOW64\CmD.exe
  CmD /c copy "C:\Users\Admin\AppData\Local\Temp\04758d397c81638f9146e4b54849e68f.exe" "C:\Users\Admin\AppData\Local\Temp\04758d397c81638f9146e4b54849e68f.exe.exe"
  2⤵
  PID:216
- C:\Windows\SysWOW64\CmD.exe
  CmD /c ""C:\Users\Admin\AppData\Local\Temp\04758d397c81638f9146e4b54849e68f.exe.exe" /okoarg > "C:\Users\Admin\AppData\Local\Temp\w3oko.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3384
- - C:\Users\Admin\AppData\Local\Temp\04758d397c81638f9146e4b54849e68f.exe.exe
    "C:\Users\Admin\AppData\Local\Temp\04758d397c81638f9146e4b54849e68f.exe.exe" /okoarg
    3⤵
    - Drops file in Drivers directory
    - Executes dropped EXE
    - Drops file in System32 directory
    PID:2064
- C:\Windows\SysWOW64\cMd.exe
  cMd /c "C:\Users\Admin\AppData\Local\Temp\w3oko.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4776
- - C:\Windows\SysWOW64\reg.exe
    reG aDd "hklm\SOFTWARE\Microsoft\Internet Explorer\Main" /v TP /t ReG_Sz /d 1000 /f
    3⤵
    - Modifies Internet Explorer settings
    PID:4456
- - C:\Windows\SysWOW64\netsh.exe
    NetSh FIReWAlL Add allOweDPrOgrAm naMe="BlueSoleil OKO" prOGram="C:\Windows\system32\svchost.exe" mode=ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:4216
- - C:\Windows\SysWOW64\netsh.exe
    nETsH fIrEwaLl aDD pOrToPEnIng tcP 8085 "OKOToGate" eNABLe
    3⤵
    - Modifies Windows Firewall
    PID:4960
- - C:\Windows\SysWOW64\sc.exe
    Sc CreATe "cpqoko6" tyPE= share start= auto binPaTh= "C:\Windows\system32\svchost.exe -k tapisrvs" DisplayName= "Service Serenum Temporary CPL Search HID Bluetooth SyncMgr"
    3⤵
    - Launches sc.exe
    PID:3304
- - C:\Windows\SysWOW64\reg.exe
    rEg adD "hkLm\sYsTEm\CuRrenTcoNtRoLSeT\seRvIcES\cpqoko6\Parameters" /v ServiceDll /t ReG_EXpaND_Sz /d "C:\Windows\system32\erokosvc.dll" /f
    3⤵
    - Sets DLL path for service in the registry
    PID:1096
- - C:\Windows\SysWOW64\reg.exe
    rEg adD "hkLm\sYsTEm\CuRrenTcoNtRoLSeT\seRvIcES\cpqoko6" /v FailureActions /t rEG_BInaRY /d 00000000000000000000000003000000140000000100000060EA00000100000060EA00000100000060EA0000 /f
    3⤵
    PID:4580
- - C:\Windows\SysWOW64\reg.exe
    ReG adD "hklm\SOfTwaRe\mIcrOSoFt\WiNdoWs nt\CURrENtveRSiOn\svcHoSt" /v tapisrvs /t rEg_mULti_sz /d "cpqoko6\0" /f
    3⤵
    PID:3104
- - C:\Windows\SysWOW64\sc.exe
    sc start "cpqoko6"
    3⤵
    - Launches sc.exe
    PID:2372
- - C:\Windows\SysWOW64\sc.exe
    sc boot ok
    3⤵
    - Launches sc.exe
    PID:1856
- - C:\Windows\SysWOW64\ipconfig.exe
    ipconfig /flushdns
    3⤵
    - Gathers network information
    PID:4336

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k tapisrvs -s cpqoko6
1⤵
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
PID:3900

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\04758d397c81638f9146e4b54849e68f.exe.exe

Filesize
220KB

MD5
04758d397c81638f9146e4b54849e68f

SHA1
61c42b655952a846737e079f72c83e73f05d3c29

SHA256
727f09e37d8f54a1ede12bf8bc0ce9f8edddcd6d130e6a0802963cfc60ec8c17

SHA512
c393087274f282686124bc445460426241231ff7b95afb76ea8146836e77b0123baecc248734d78034618d812e3ffe9613b50567b545b36694ea9f25d6e997d4

Download Submit
C:\Users\Admin\AppData\Local\Temp\w3oko.bat

Filesize
1KB

MD5
e31a8c4a238d3421c0600b3143217794

SHA1
1c8fbacbc51005e7aa68f337209704c5a6784340

SHA256
4a1bb9c1af16b0a6cbd3e6113cc240c1890a709816354a09a22ad4d712f73816

SHA512
8a352c6faab3986acb00f04558c46cb5d4c847a9848da2f25062e0efc88d02541b2d59dcf7c193a2735128cdc14a4e6557b08179b9bc118aea51f13bde3c6713

Download Submit
C:\Windows\SysWOW64\erokosvc.dll

Filesize
64KB

MD5
fa9ac38632c5c408850975a42806d546

SHA1
041434be54ea43ba964abe5d761723219f68d225

SHA256
61c02fde1738564b49ded245533ed2e1c15a5b079740182388ad1c4efc9beaab

SHA512
de1ffc3a573ac25d48f39742eefc9f1b8ca70502b3934e3a37e17061c19bb7f7323814a9167b2f95fad1c002b85fea5de2cad0657ced4786dda78282ead750e5

Download Submit
\??\c:\windows\SysWOW64\erokosvc.dll

Filesize
86KB

MD5
1b8385dd379173a68ed9b30676796a7b

SHA1
b1b189cf1fc410b7b25d2352741032a23b776b7a

SHA256
1009d673c1be45ca4c66686021979df4f4e44bbe167a2124f244668dd12f7e19

SHA512
243b4d7326ae4d20e3b833d3d88290587d4a2cd24c3b05deab20af60382bac4ca28702c4c345d3e57ccbdf0116b02744822d26c002e033608d7049427e2bb513

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads