5fb159bef67b39c045a61372b7609a64e860b69522e232526a9b2ceb4768cdb0

General

Target

5fb159bef67b39c045a61372b7609a64e860b69522e232526a9b2ceb4768cdb0.exe
Size

70KB
MD5

244a4454dda7cb9b99a2f1ee0369b86b
SHA1

ace308393a488a77709d2eee7744731d838f59c8
SHA256

5fb159bef67b39c045a61372b7609a64e860b69522e232526a9b2ceb4768cdb0
SHA512

9c8196210f90074596ff9982de61be152d8903c0e38a593aee51a7a09c6ad33feb1778ab222040c5a73095f8e5e9b078df47f594e2a67d5dcd91378e6b96c48b
SSDEEP

1536:1teqKDlXvCDB04f5Gn/L8FlADNt3d1Hw8sl4:Olg35GTslA5t3/w8h

Score

10^/10

evasion persistence trojan

Malware Config

Signatures

Windows security bypass 2 TTPs 4 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

okpupum.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "25600"	okpupum.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "25600"	okpupum.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "25600"	okpupum.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "25600"	okpupum.exe

Modifies Installed Components in the registry 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

okpupum.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{4B584950-5043-4b46-4B58-495050434b46}	okpupum.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{4B584950-5043-4b46-4B58-495050434b46}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a"	okpupum.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{4B584950-5043-4b46-4B58-495050434b46}\IsInstalled = "1"	okpupum.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{4B584950-5043-4b46-4B58-495050434b46}\StubPath = "C:\\Windows\\system32\\epfeagid.exe"	okpupum.exe

Sets file execution options in registry 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

okpupum.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\Debugger = "C:\\Windows\\system32\\ouxseveg.exe"	okpupum.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe	okpupum.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890 = "a"	okpupum.exe

Executes dropped EXE 2 IoCs

Processes:

okpupum.exeokpupum.exe

pid process

2840 okpupum.exe
2964 okpupum.exe

Loads dropped DLL 3 IoCs

Processes:

5fb159bef67b39c045a61372b7609a64e860b69522e232526a9b2ceb4768cdb0.exeokpupum.exe

pid	process
2956	5fb159bef67b39c045a61372b7609a64e860b69522e232526a9b2ceb4768cdb0.exe
2956	5fb159bef67b39c045a61372b7609a64e860b69522e232526a9b2ceb4768cdb0.exe
2840	okpupum.exe

Windows security modification 2 TTPs 4 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

okpupum.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "25600"	okpupum.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "25600"	okpupum.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "25600"	okpupum.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "25600"	okpupum.exe

Modifies WinLogon 2 TTPs 5 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

okpupum.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\Startup = "Startup"	okpupum.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}	okpupum.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify	okpupum.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345 = "a"	okpupum.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\DLLName = "C:\\Windows\\system32\\asheavab-icoab.dll"	okpupum.exe

Drops file in System32 directory 9 IoCs

Processes:

okpupum.exe5fb159bef67b39c045a61372b7609a64e860b69522e232526a9b2ceb4768cdb0.exe

description	ioc	process
File created	C:\Windows\SysWOW64\asheavab-icoab.dll	okpupum.exe
File opened for modification	C:\Windows\SysWOW64\ouxseveg.exe	okpupum.exe
File created	C:\Windows\SysWOW64\ouxseveg.exe	okpupum.exe
File opened for modification	C:\Windows\SysWOW64\epfeagid.exe	okpupum.exe
File created	C:\Windows\SysWOW64\epfeagid.exe	okpupum.exe
File opened for modification	C:\Windows\SysWOW64\okpupum.exe	5fb159bef67b39c045a61372b7609a64e860b69522e232526a9b2ceb4768cdb0.exe
File created	C:\Windows\SysWOW64\okpupum.exe	5fb159bef67b39c045a61372b7609a64e860b69522e232526a9b2ceb4768cdb0.exe
File opened for modification	C:\Windows\SysWOW64\asheavab-icoab.dll	okpupum.exe
File opened for modification	C:\Windows\SysWOW64\okpupum.exe	okpupum.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

okpupum.exeokpupum.exe

pid	process
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2964	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe
2840	okpupum.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

5fb159bef67b39c045a61372b7609a64e860b69522e232526a9b2ceb4768cdb0.exeokpupum.exe

description	pid	process
Token: SeDebugPrivilege	2956	5fb159bef67b39c045a61372b7609a64e860b69522e232526a9b2ceb4768cdb0.exe
Token: SeDebugPrivilege	2840	okpupum.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

5fb159bef67b39c045a61372b7609a64e860b69522e232526a9b2ceb4768cdb0.exeokpupum.exe

description	pid	process	target process
PID 2956 wrote to memory of 2840	2956	5fb159bef67b39c045a61372b7609a64e860b69522e232526a9b2ceb4768cdb0.exe	okpupum.exe
PID 2956 wrote to memory of 2840	2956	5fb159bef67b39c045a61372b7609a64e860b69522e232526a9b2ceb4768cdb0.exe	okpupum.exe
PID 2956 wrote to memory of 2840	2956	5fb159bef67b39c045a61372b7609a64e860b69522e232526a9b2ceb4768cdb0.exe	okpupum.exe
PID 2956 wrote to memory of 2840	2956	5fb159bef67b39c045a61372b7609a64e860b69522e232526a9b2ceb4768cdb0.exe	okpupum.exe
PID 2840 wrote to memory of 412	2840	okpupum.exe	winlogon.exe
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 2964	2840	okpupum.exe	okpupum.exe
PID 2840 wrote to memory of 2964	2840	okpupum.exe	okpupum.exe
PID 2840 wrote to memory of 2964	2840	okpupum.exe	okpupum.exe
PID 2840 wrote to memory of 2964	2840	okpupum.exe	okpupum.exe
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE
PID 2840 wrote to memory of 1324	2840	okpupum.exe	Explorer.EXE

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:412

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1324

C:\Users\Admin\AppData\Local\Temp\5fb159bef67b39c045a61372b7609a64e860b69522e232526a9b2ceb4768cdb0.exe
"C:\Users\Admin\AppData\Local\Temp\5fb159bef67b39c045a61372b7609a64e860b69522e232526a9b2ceb4768cdb0.exe"
2⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2956

C:\Windows\SysWOW64\okpupum.exe
"C:\Windows\system32\okpupum.exe"
3⤵
- Windows security bypass
- Modifies Installed Components in the registry
- Sets file execution options in registry
- Executes dropped EXE
- Loads dropped DLL
- Windows security modification
- Modifies WinLogon
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2840

C:\Windows\SysWOW64\okpupum.exe
--k33p
4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:2964

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

3

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

3

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Impair Defenses

2

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\asheavab-icoab.dll

Filesize
5KB

MD5
f37b21c00fd81bd93c89ce741a88f183

SHA1
b2796500597c68e2f5638e1101b46eaf32676c1c

SHA256
76cf016fd77cb5a06c6ed4674ddc2345e8390c010cf344491a6e742baf2c0fb0

SHA512
252fe66dea9a4b9aebc5fd2f24434719cb25159ba51549d9de407f44b6a2f7bce6e071be02c4f2ad6aef588c77f12c00ed415eb54f96dec1b077326e101ce0f4

Download Submit
C:\Windows\SysWOW64\epfeagid.exe

Filesize
72KB

MD5
c9100d70d9d6772c746cc1e6b8d4a5f3

SHA1
b28ee1aaebb0fadac60cd408286692b3f1b2fe2b

SHA256
8b01ce6a2e26db2bbfacef5b75215449e2a085fc901ab5a0317260c527820e51

SHA512
6de4d3aed751c10706b9102e79cbdf5e9d905adbe9b751833e28c0a181b03923732976ff1bdb77bce76f7ab60408f5c5baf4382a2e419429472be2478e7ce050

Download Submit
C:\Windows\SysWOW64\ouxseveg.exe

Filesize
73KB

MD5
85bed8510700e88ca992fffc7e237b71

SHA1
73806bfbcff5ee23bbc1428ad3e7c11e11991c84

SHA256
7f6c741b295e59b8801d2e09f912112cf811401bb854158bab24422c41bef2c0

SHA512
41d852fa1e5c3441f0739545462bb70c6b403a0be3101d7af465ab204ee84a905327af7ea97947feff22d1dbd49bbf8ea7d595d7cb4266c035ddfc5b150bf023

Download Submit
\Windows\SysWOW64\okpupum.exe

Filesize
70KB

MD5
244a4454dda7cb9b99a2f1ee0369b86b

SHA1
ace308393a488a77709d2eee7744731d838f59c8

SHA256
5fb159bef67b39c045a61372b7609a64e860b69522e232526a9b2ceb4768cdb0

SHA512
9c8196210f90074596ff9982de61be152d8903c0e38a593aee51a7a09c6ad33feb1778ab222040c5a73095f8e5e9b078df47f594e2a67d5dcd91378e6b96c48b

Download Submit
memory/2840-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2956-10-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2964-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads