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\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
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "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\{4A495857-4553-4e48-4A49-585745534e48}	okpupum.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4A495857-4553-4e48-4A49-585745534e48}\01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123 = "a"	okpupum.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4A495857-4553-4e48-4A49-585745534e48}\IsInstalled = "1"	okpupum.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{4A495857-4553-4e48-4A49-585745534e48}\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
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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\explorer.exe\Debugger = "C:\\Windows\\system32\\ouxseveg.exe"	okpupum.exe

Executes dropped EXE 2 IoCs

Processes:

okpupum.exeokpupum.exe

pid process

3792 okpupum.exe
1876 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\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
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "25600"	okpupum.exe

Modifies WinLogon 2 TTPs 5 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

okpupum.exe

description	ioc	process
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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\{BC84DF00-BC38-9902-8082-6FCBF2D87A0B}\Startup = "Startup"	okpupum.exe

Drops file in System32 directory 9 IoCs

Processes:

okpupum.exe5fb159bef67b39c045a61372b7609a64e860b69522e232526a9b2ceb4768cdb0.exe

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

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

okpupum.exeokpupum.exe

pid	process
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
1876	okpupum.exe
1876	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe
3792	okpupum.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

5fb159bef67b39c045a61372b7609a64e860b69522e232526a9b2ceb4768cdb0.exeokpupum.exe

description	pid	process
Token: SeDebugPrivilege	2852	5fb159bef67b39c045a61372b7609a64e860b69522e232526a9b2ceb4768cdb0.exe
Token: SeDebugPrivilege	3792	okpupum.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

5fb159bef67b39c045a61372b7609a64e860b69522e232526a9b2ceb4768cdb0.exeokpupum.exe

description	pid	process	target process
PID 2852 wrote to memory of 3792	2852	5fb159bef67b39c045a61372b7609a64e860b69522e232526a9b2ceb4768cdb0.exe	okpupum.exe
PID 2852 wrote to memory of 3792	2852	5fb159bef67b39c045a61372b7609a64e860b69522e232526a9b2ceb4768cdb0.exe	okpupum.exe
PID 2852 wrote to memory of 3792	2852	5fb159bef67b39c045a61372b7609a64e860b69522e232526a9b2ceb4768cdb0.exe	okpupum.exe
PID 3792 wrote to memory of 612	3792	okpupum.exe	winlogon.exe
PID 3792 wrote to memory of 1876	3792	okpupum.exe	okpupum.exe
PID 3792 wrote to memory of 1876	3792	okpupum.exe	okpupum.exe
PID 3792 wrote to memory of 1876	3792	okpupum.exe	okpupum.exe
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE
PID 3792 wrote to memory of 3424	3792	okpupum.exe	Explorer.EXE

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:612

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3424

C:\Users\Admin\AppData\Local\Temp\5fb159bef67b39c045a61372b7609a64e860b69522e232526a9b2ceb4768cdb0.exe
"C:\Users\Admin\AppData\Local\Temp\5fb159bef67b39c045a61372b7609a64e860b69522e232526a9b2ceb4768cdb0.exe"
2⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2852

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
- Windows security modification
- Modifies WinLogon
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3792

C:\Windows\SysWOW64\okpupum.exe
--k33p
4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:1876

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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
d7970a9a256b1dd77567faaab82464e8

SHA1
8da0f5a3c613c4e0be3a83ab80164f8ae6856f8e

SHA256
679d1a807dba1af0148a00c0b6855153b925d06c3f78038f300363de0c034dd9

SHA512
9797d7dc30e454dda0318d4c07a0d27994473018ed56a59e98154f28c34f10d18a2b4e180b5ed3401f70038aacce39f956626c6c6ce64bbcec1d197e2d438e7d

Download Submit
C:\Windows\SysWOW64\okpupum.exe
Filesize
70KB

MD5
244a4454dda7cb9b99a2f1ee0369b86b

SHA1
ace308393a488a77709d2eee7744731d838f59c8

SHA256
5fb159bef67b39c045a61372b7609a64e860b69522e232526a9b2ceb4768cdb0

SHA512
9c8196210f90074596ff9982de61be152d8903c0e38a593aee51a7a09c6ad33feb1778ab222040c5a73095f8e5e9b078df47f594e2a67d5dcd91378e6b96c48b

Download Submit
C:\Windows\SysWOW64\ouxseveg.exe
Filesize
73KB

MD5
f528592bf169b2518d7e1b10eea1eb05

SHA1
0371854c1cf7d87e6226121c388d96427824127c

SHA256
1d48927a9757f9bcaa95dc5c677ea19b6353b088792a6fb4941a043b26a2fb95

SHA512
fa2752310818aaed87fe93566c727b872288e2577abaa39fd5e2e974789b666d7bb434336b40728b7f84d570d5ac94afce1409b7b50d6ccc904703afcf39ecf8

Download Submit
memory/2852-5-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads