ec021c01776c7e86e836ae56f331b88196a5024589b3a0a811b7c8aebacdc116

General

Target

ec021c01776c7e86e836ae56f331b88196a5024589b3a0a811b7c8aebacdc116.dll
Size

1.5MB
MD5

849a766ef139b1c82e4cc8541fbb1c1c
SHA1

2d3dfa8517778130e507be7b58f1a96ea7c210ad
SHA256

ec021c01776c7e86e836ae56f331b88196a5024589b3a0a811b7c8aebacdc116
SHA512

c48bc320d04f5daf612784841a8a47cf544555803076d8933340636b986ec6babf144cc7704e2115b997dc10507eeaf2049239a90ec9b76b8670c90091207b5d
SSDEEP

6144:GXkWpMQwzjCZl13fTS5W3tc7T1rdEjVJ3D:GXNMQ1ZDfTS5eccjVBD

Score

8^/10

persistence

Malware Config

Signatures

Blocklisted process makes network request 5 IoCs

Processes:

rundll32.exe

flow pid process

2 276 rundll32.exe
3 276 rundll32.exe
4 276 rundll32.exe
5 276 rundll32.exe
6 276 rundll32.exe
Deletes itself 1 IoCs

Processes:

rundll32.exe

pid process

276 rundll32.exe
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

276 rundll32.exe

flow	pid	process
2	276	rundll32.exe
3	276	rundll32.exe
4	276	rundll32.exe
5	276	rundll32.exe
6	276	rundll32.exe

pid	process
276	rundll32.exe

pid	process
276	rundll32.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

regsvr32.exerundll32.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\ctfmon.exe = "C:\\Windows\\system32\\rundll32.exe C:\\PROGRA~3\\comsubjejm.dat,StartAs"	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\ctfmon.exe = "C:\\Windows\\system32\\rundll32.exe C:\\PROGRA~3\\comsubjejm.dat,StartAs"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run	regsvr32.exe

Drops file in Program Files directory 5 IoCs

Processes:

regsvr32.exerundll32.exe

description	ioc	process
File opened for modification	C:\PROGRA~3\mjejbusmoc.dat	regsvr32.exe
File opened for modification	C:\PROGRA~3\mjejbusmoc.dat	rundll32.exe
File created	C:\PROGRA~3\comsubjejm.dat	regsvr32.exe
File opened for modification	C:\PROGRA~3\comsubjejm.dat	regsvr32.exe
File created	C:\PROGRA~3\mjejbusmoc.dat	regsvr32.exe

Modifies Internet Explorer Protected Mode 1 TTPs 5 IoCs

Modify Registry

T1112

Processes:

rundll32.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1\2500 = "3"	rundll32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2\2500 = "3"	rundll32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\2500 = "3"	rundll32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4\2500 = "3"	rundll32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0\2500 = "3"	rundll32.exe

Modifies Internet Explorer Protected Mode Banner 1 TTPs 1 IoCs

Modify Registry

T1112

Processes:

rundll32.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main\NoProtectedModeBanner = "1"	rundll32.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs
adware spyware

Modify Registry
T1112

Processes:

rundll32.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main rundll32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Main	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

regsvr32.exerundll32.exe

pid	process
1912	regsvr32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe
276	rundll32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

regsvr32.exerundll32.exe

description pid process

Token: SeDebugPrivilege 1912 regsvr32.exe
Token: SeDebugPrivilege 276 rundll32.exe

description	pid	process
Token: SeDebugPrivilege	1912	regsvr32.exe
Token: SeDebugPrivilege	276	rundll32.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

regsvr32.exeregsvr32.exerundll32.exe

description	pid	process	target process
PID 1996 wrote to memory of 1912	1996	regsvr32.exe	regsvr32.exe
PID 1996 wrote to memory of 1912	1996	regsvr32.exe	regsvr32.exe
PID 1996 wrote to memory of 1912	1996	regsvr32.exe	regsvr32.exe
PID 1996 wrote to memory of 1912	1996	regsvr32.exe	regsvr32.exe
PID 1996 wrote to memory of 1912	1996	regsvr32.exe	regsvr32.exe
PID 1996 wrote to memory of 1912	1996	regsvr32.exe	regsvr32.exe
PID 1996 wrote to memory of 1912	1996	regsvr32.exe	regsvr32.exe
PID 1912 wrote to memory of 1284	1912	regsvr32.exe	Explorer.EXE
PID 1912 wrote to memory of 276	1912	regsvr32.exe	rundll32.exe
PID 1912 wrote to memory of 276	1912	regsvr32.exe	rundll32.exe
PID 1912 wrote to memory of 276	1912	regsvr32.exe	rundll32.exe
PID 1912 wrote to memory of 276	1912	regsvr32.exe	rundll32.exe
PID 1912 wrote to memory of 276	1912	regsvr32.exe	rundll32.exe
PID 1912 wrote to memory of 276	1912	regsvr32.exe	rundll32.exe
PID 1912 wrote to memory of 276	1912	regsvr32.exe	rundll32.exe
PID 276 wrote to memory of 1284	276	rundll32.exe	Explorer.EXE
PID 276 wrote to memory of 1140	276	rundll32.exe	taskhost.exe
PID 276 wrote to memory of 1228	276	rundll32.exe	Dwm.exe
PID 276 wrote to memory of 1284	276	rundll32.exe	Explorer.EXE

C:\Windows\system32\taskhost.exe
"taskhost.exe"
1⤵
PID:1140

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1284

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\ec021c01776c7e86e836ae56f331b88196a5024589b3a0a811b7c8aebacdc116.dll
2⤵
- Suspicious use of WriteProcessMemory
PID:1996

C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\ec021c01776c7e86e836ae56f331b88196a5024589b3a0a811b7c8aebacdc116.dll
3⤵
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1912

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:\PROGRA~3\comsubjejm.dat,StartAs
4⤵
- Blocklisted process makes network request
- Deletes itself
- Loads dropped DLL
- Adds Run key to start application
- Drops file in Program Files directory
- Modifies Internet Explorer Protected Mode
- Modifies Internet Explorer Protected Mode Banner
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:276

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1228

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

4

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\PROGRA~3\comsubjejm.dat
Filesize
2.5MB

MD5
9fae9a23a0e61826e2d5f635e8c158e5

SHA1
cfc3b995c215a5c8126f38ac98f31e0309227d56

SHA256
102da2a7d81e2a1e73db95605e905ffb5e560867d1e86677b227e4229cb9a517

SHA512
47e81993c69ff60504e02b240f5a23887b1426bbc0ba0a0c111bf922720a86515d23f799cc2638f8d4f20139d591ffa5a7789f9668d18dce6ad1aa2463d9927e

Download Submit
C:\PROGRA~3\mjejbusmoc.dat
Filesize
72.5MB

MD5
fd720cc32b3d38b8d8a1c8b027b53969

SHA1
1cf205f43ec6c5964bc1691c9fe79b6b5adb61a6

SHA256
ab99b89eb541863fdaf1b743fd8032cf0dca93a204ad62b5131edaecd274e746

SHA512
240cc4dd52753c0ec27006f4fb236f1bc19aec9b7216993d292720bc480f0815f94bb955dc6242e981df7c156723cc8d47894fa1974558c11831e0f053d41f69

Download Submit
\PROGRA~3\comsubjejm.dat
Filesize
2.5MB

MD5
9fae9a23a0e61826e2d5f635e8c158e5

SHA1
cfc3b995c215a5c8126f38ac98f31e0309227d56

SHA256
102da2a7d81e2a1e73db95605e905ffb5e560867d1e86677b227e4229cb9a517

SHA512
47e81993c69ff60504e02b240f5a23887b1426bbc0ba0a0c111bf922720a86515d23f799cc2638f8d4f20139d591ffa5a7789f9668d18dce6ad1aa2463d9927e

Download Submit
memory/276-61-0x0000000000000000-mapping.dmp

Download
memory/276-66-0x00000000007E0000-0x0000000000847000-memory.dmp

Filesize
412KB

Download
memory/276-68-0x00000000007E0000-0x0000000000847000-memory.dmp

Filesize
412KB

Download
memory/276-69-0x00000000008F0000-0x0000000000958000-memory.dmp

Filesize
416KB

Download
memory/276-70-0x00000000007E0000-0x0000000000847000-memory.dmp

Filesize
412KB

Download
memory/1912-59-0x0000000000210000-0x000000000023B000-memory.dmp

Filesize
172KB

Download
memory/1912-60-0x0000000001E00000-0x0000000001E80000-memory.dmp

Filesize
512KB

Download
memory/1912-62-0x0000000001E00000-0x0000000001E33000-memory.dmp

Filesize
204KB

Download
memory/1912-58-0x0000000001E00000-0x0000000001E80000-memory.dmp

Filesize
512KB

Download
memory/1912-56-0x0000000076031000-0x0000000076033000-memory.dmp

Filesize
8KB

Download
memory/1912-55-0x0000000000000000-mapping.dmp

Download
memory/1996-54-0x000007FEFB831000-0x000007FEFB833000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads