modiloader | 751ae8e557691c025c0bf9dc92ced35d460aabc35c24f67bd25b1ec210c0551d

Analysis

max time kernel
133s
max time network
178s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
27-11-2022 01:18

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General

Target

751ae8e557691c025c0bf9dc92ced35d460aabc35c24f67bd25b1ec210c0551d.exe
Size

719KB
MD5

23190e9a8d860421af095c068d0163df
SHA1

2d5ca9b5cea3c7eed2c67b10324d34136eceea4d
SHA256

751ae8e557691c025c0bf9dc92ced35d460aabc35c24f67bd25b1ec210c0551d
SHA512

45990366742bdd1fad322b8c9ab57ece7bde0a1474d2aaef370b2b00a4292d3bc1833e519a4188d42e95d28d2e818bbab5942d0e0828776acfa74e8285241cd4
SSDEEP

12288:6XgPVmsO7H+JeYkZQors8sEyMGXxeklX4EEPSwDfAmgBJbf8AwnBrRm8dZ/X:AoZ3J78G1X4bEmCb+rRvZ/X

Score

10^/10

modiloader bootkit evasion persistence trojan

Malware Config

Signatures

ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
trojan modiloader

Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Processes:

B85EgtCQKi4p6Z9Kt2.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	B85EgtCQKi4p6Z9Kt2.exe

ModiLoader Second Stage 3 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\cog.exe	modiloader_stage2
C:\Users\Admin\cog.exe	modiloader_stage2
C:\Users\Admin\cog.exe	modiloader_stage2

Executes dropped EXE 6 IoCs

Processes:

B85EgtCQKi4p6Z9Kt2.execod.execof.execog.exefeonuug.execog.exe

pid process

4900 B85EgtCQKi4p6Z9Kt2.exe
1864 cod.exe
4816 cof.exe
1136 cog.exe
3340 feonuug.exe
816 cog.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

Processes:

B85EgtCQKi4p6Z9Kt2.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	B85EgtCQKi4p6Z9Kt2.exe

Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

1772 rundll32.exe

pid	process
1772	rundll32.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

rundll32.exeB85EgtCQKi4p6Z9Kt2.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Ynatisayik = "rundll32.exe \"C:\\Users\\Admin\\AppData\\Local\\lintypI.dll\",Startup"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\	B85EgtCQKi4p6Z9Kt2.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\feonuug = "C:\\Users\\Admin\\feonuug.exe /o"	B85EgtCQKi4p6Z9Kt2.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
bootkit persistence

Bootkit
T1067

Processes:

cod.exe

description ioc process

File opened for modification \??\physicaldrive0 cod.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

cog.exe

description pid process

PID 1136 set thread context of 0 1136 cog.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Enumerates processes with tasklist 1 TTPs 1 IoCs

Process Discovery
T1057

Processes:

tasklist.exe

pid process

4932 tasklist.exe

description	ioc	process
File opened for modification	\??\physicaldrive0	cod.exe

description	pid	process
PID 1136 set thread context of 0	1136	cog.exe

pid	process
4932	tasklist.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

B85EgtCQKi4p6Z9Kt2.exerundll32.exefeonuug.exe

pid	process
4900	B85EgtCQKi4p6Z9Kt2.exe
4900	B85EgtCQKi4p6Z9Kt2.exe
4900	B85EgtCQKi4p6Z9Kt2.exe
4900	B85EgtCQKi4p6Z9Kt2.exe
1772	rundll32.exe
1772	rundll32.exe
3340	feonuug.exe
3340	feonuug.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

cod.exe

description pid process

Token: SeShutdownPrivilege 1864 cod.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

B85EgtCQKi4p6Z9Kt2.exefeonuug.exe

pid process

4900 B85EgtCQKi4p6Z9Kt2.exe
3340 feonuug.exe

description	pid	process
Token: SeShutdownPrivilege	1864	cod.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

751ae8e557691c025c0bf9dc92ced35d460aabc35c24f67bd25b1ec210c0551d.execof.exeB85EgtCQKi4p6Z9Kt2.exe

description	pid	process	target process
PID 4952 wrote to memory of 4900	4952	751ae8e557691c025c0bf9dc92ced35d460aabc35c24f67bd25b1ec210c0551d.exe	B85EgtCQKi4p6Z9Kt2.exe
PID 4952 wrote to memory of 4900	4952	751ae8e557691c025c0bf9dc92ced35d460aabc35c24f67bd25b1ec210c0551d.exe	B85EgtCQKi4p6Z9Kt2.exe
PID 4952 wrote to memory of 4900	4952	751ae8e557691c025c0bf9dc92ced35d460aabc35c24f67bd25b1ec210c0551d.exe	B85EgtCQKi4p6Z9Kt2.exe
PID 4952 wrote to memory of 1864	4952	751ae8e557691c025c0bf9dc92ced35d460aabc35c24f67bd25b1ec210c0551d.exe	cod.exe
PID 4952 wrote to memory of 1864	4952	751ae8e557691c025c0bf9dc92ced35d460aabc35c24f67bd25b1ec210c0551d.exe	cod.exe
PID 4952 wrote to memory of 1864	4952	751ae8e557691c025c0bf9dc92ced35d460aabc35c24f67bd25b1ec210c0551d.exe	cod.exe
PID 4952 wrote to memory of 4816	4952	751ae8e557691c025c0bf9dc92ced35d460aabc35c24f67bd25b1ec210c0551d.exe	cof.exe
PID 4952 wrote to memory of 4816	4952	751ae8e557691c025c0bf9dc92ced35d460aabc35c24f67bd25b1ec210c0551d.exe	cof.exe
PID 4952 wrote to memory of 4816	4952	751ae8e557691c025c0bf9dc92ced35d460aabc35c24f67bd25b1ec210c0551d.exe	cof.exe
PID 4952 wrote to memory of 1136	4952	751ae8e557691c025c0bf9dc92ced35d460aabc35c24f67bd25b1ec210c0551d.exe	cog.exe
PID 4952 wrote to memory of 1136	4952	751ae8e557691c025c0bf9dc92ced35d460aabc35c24f67bd25b1ec210c0551d.exe	cog.exe
PID 4952 wrote to memory of 1136	4952	751ae8e557691c025c0bf9dc92ced35d460aabc35c24f67bd25b1ec210c0551d.exe	cog.exe
PID 4952 wrote to memory of 3716	4952	751ae8e557691c025c0bf9dc92ced35d460aabc35c24f67bd25b1ec210c0551d.exe	cmd.exe
PID 4952 wrote to memory of 3716	4952	751ae8e557691c025c0bf9dc92ced35d460aabc35c24f67bd25b1ec210c0551d.exe	cmd.exe
PID 4952 wrote to memory of 3716	4952	751ae8e557691c025c0bf9dc92ced35d460aabc35c24f67bd25b1ec210c0551d.exe	cmd.exe
PID 4816 wrote to memory of 1772	4816	cof.exe	rundll32.exe
PID 4816 wrote to memory of 1772	4816	cof.exe	rundll32.exe
PID 4816 wrote to memory of 1772	4816	cof.exe	rundll32.exe
PID 4900 wrote to memory of 3340	4900	B85EgtCQKi4p6Z9Kt2.exe	feonuug.exe
PID 4900 wrote to memory of 3340	4900	B85EgtCQKi4p6Z9Kt2.exe	feonuug.exe
PID 4900 wrote to memory of 3340	4900	B85EgtCQKi4p6Z9Kt2.exe	feonuug.exe
PID 4900 wrote to memory of 3936	4900	B85EgtCQKi4p6Z9Kt2.exe	cmd.exe
PID 4900 wrote to memory of 3936	4900	B85EgtCQKi4p6Z9Kt2.exe	cmd.exe
PID 4900 wrote to memory of 3936	4900	B85EgtCQKi4p6Z9Kt2.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\751ae8e557691c025c0bf9dc92ced35d460aabc35c24f67bd25b1ec210c0551d.exe
"C:\Users\Admin\AppData\Local\Temp\751ae8e557691c025c0bf9dc92ced35d460aabc35c24f67bd25b1ec210c0551d.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4952
- C:\Users\Admin\B85EgtCQKi4p6Z9Kt2.exe
  B85EgtCQKi4p6Z9Kt2.exe
  2⤵
  - Modifies visiblity of hidden/system files in Explorer
  - Executes dropped EXE
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4900
- - C:\Users\Admin\feonuug.exe
    "C:\Users\Admin\feonuug.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of SetWindowsHookEx
    PID:3340
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c tasklist&&del B85EgtCQKi4p6Z9Kt2.exe
    3⤵
    PID:3936
  - - C:\Windows\SysWOW64\tasklist.exe
      tasklist
      4⤵
      Enumerates processes with tasklist
      PID:4932
- C:\Users\Admin\cod.exe
  cod.exe
  2⤵
  - Executes dropped EXE
  - Writes to the Master Boot Record (MBR)
  - Suspicious use of AdjustPrivilegeToken
  PID:1864
- C:\Users\Admin\cof.exe
  cof.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:4816
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe "C:\Users\Admin\AppData\Local\lintypI.dll",Startup
    3⤵
    - Loads dropped DLL
    - Adds Run key to start application
    - Suspicious behavior: EnumeratesProcesses
    PID:1772
  - - C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe "C:\Users\Admin\AppData\Local\lintypI.dll",iep
      4⤵
      PID:2112
- C:\Users\Admin\cog.exe
  cog.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  PID:1136
- - C:\Users\Admin\cog.exe
    cog.exe
    3⤵
    - Executes dropped EXE
    PID:816
- C:\Windows\SysWOW64\cmd.exe
  cmd /c del 751ae8e557691c025c0bf9dc92ced35d460aabc35c24f67bd25b1ec210c0551d.exe
  2⤵
  PID:3716

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Bootkit

T1067

Hidden Files and Directories

T1158

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Credential Access

Discovery

Process Discovery

T1057

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\lintypI.dll

Filesize
103KB

MD5
be60099ceffb0aece0bc0c52998e9d65

SHA1
6ff11181390b5eccfb9a832ea5311d58bcc7a3a3

SHA256
e41f195954abff7c7bdc150773ad9f0b4029a883386ac179c1aa9d44f9ab6e4a

SHA512
c4beef5b86370a959b624041cc2db1de2da07a15df17077d728ea74036398fd1e62b6e7e147c53ea944606d751d0934f423b70193ad570a8cba097a823facdc0

Download Submit
C:\Users\Admin\AppData\Local\lintypI.dll

Filesize
103KB

MD5
be60099ceffb0aece0bc0c52998e9d65

SHA1
6ff11181390b5eccfb9a832ea5311d58bcc7a3a3

SHA256
e41f195954abff7c7bdc150773ad9f0b4029a883386ac179c1aa9d44f9ab6e4a

SHA512
c4beef5b86370a959b624041cc2db1de2da07a15df17077d728ea74036398fd1e62b6e7e147c53ea944606d751d0934f423b70193ad570a8cba097a823facdc0

Download Submit
C:\Users\Admin\B85EgtCQKi4p6Z9Kt2.exe

Filesize
152KB

MD5
72e9d71fe7ad21610b846614566d6e2f

SHA1
35071ef247823ff6fa675449c6506caa2f5b145f

SHA256
4dc0b35a38321c71c24289acf43c102e6aa875307f830900d39f25491c83cda9

SHA512
14431710838e2eea0fdb3a7b73743b6d101ec6a4ceebdf0716e2855e845bd2b1722e5178d310a24ce7e5754076a9dc0e62f351c1518c391c6db8533af35203f3

Download Submit
C:\Users\Admin\B85EgtCQKi4p6Z9Kt2.exe

Filesize
152KB

MD5
72e9d71fe7ad21610b846614566d6e2f

SHA1
35071ef247823ff6fa675449c6506caa2f5b145f

SHA256
4dc0b35a38321c71c24289acf43c102e6aa875307f830900d39f25491c83cda9

SHA512
14431710838e2eea0fdb3a7b73743b6d101ec6a4ceebdf0716e2855e845bd2b1722e5178d310a24ce7e5754076a9dc0e62f351c1518c391c6db8533af35203f3

Download Submit
C:\Users\Admin\cod.exe

Filesize
176KB

MD5
dbadc5fadb7497f5761537c06026ff47

SHA1
c8bd7319e170bd5966a73bae6f34cee4782b4f97

SHA256
b8fdc5c5f8aa378ef3ba8ee5172550a8f7ca295bebe858dab8ec171f1328036e

SHA512
7bced6bbdeb0f770d78f199d16d8ed86e90794141df101d1bb4878c55313af058a5551e0df2da65f6cd3507185cca13c7459aabf97c22faa83518b53321c2b7e

Download Submit
C:\Users\Admin\cod.exe

Filesize
176KB

MD5
dbadc5fadb7497f5761537c06026ff47

SHA1
c8bd7319e170bd5966a73bae6f34cee4782b4f97

SHA256
b8fdc5c5f8aa378ef3ba8ee5172550a8f7ca295bebe858dab8ec171f1328036e

SHA512
7bced6bbdeb0f770d78f199d16d8ed86e90794141df101d1bb4878c55313af058a5551e0df2da65f6cd3507185cca13c7459aabf97c22faa83518b53321c2b7e

Download Submit
C:\Users\Admin\cof.exe

Filesize
103KB

MD5
d15f3d9213e5972e1e2c069448d6f228

SHA1
224f67d7bcb15f1921211d68df19a072dc84ccfe

SHA256
9c0e3fcd2615c0a3678e77583970c5d9401ea223db3e517d048453db6427214d

SHA512
3e53dde211235f50f7507839f4f0e8ef6c0456f4f92b40e3a9d57eb64c1ee17774698858213e1cdefb8e87803648ff97001b2a00ad2c2c6b0c896774b1e785e3

Download Submit
C:\Users\Admin\cof.exe

Filesize
103KB

MD5
d15f3d9213e5972e1e2c069448d6f228

SHA1
224f67d7bcb15f1921211d68df19a072dc84ccfe

SHA256
9c0e3fcd2615c0a3678e77583970c5d9401ea223db3e517d048453db6427214d

SHA512
3e53dde211235f50f7507839f4f0e8ef6c0456f4f92b40e3a9d57eb64c1ee17774698858213e1cdefb8e87803648ff97001b2a00ad2c2c6b0c896774b1e785e3

Download Submit
C:\Users\Admin\cog.exe

Filesize
145KB

MD5
262a039229f90ba2461f2e810ad74447

SHA1
9dfe5040a3d6ea8262313953c02a1e6ae39c6916

SHA256
e20729c3095a40a637efb304bdf57902cd4948f22406138e0dbdf28f034cedb3

SHA512
d7612cdbc38aea73462aa7851ab3078dfb89a1b4c96414f5d8144c456f694971f08a79bbb1a738ffeb273f99122432b1009cbf4bd483884dd50ca115a64ef641

Download Submit
C:\Users\Admin\cog.exe

Filesize
145KB

MD5
262a039229f90ba2461f2e810ad74447

SHA1
9dfe5040a3d6ea8262313953c02a1e6ae39c6916

SHA256
e20729c3095a40a637efb304bdf57902cd4948f22406138e0dbdf28f034cedb3

SHA512
d7612cdbc38aea73462aa7851ab3078dfb89a1b4c96414f5d8144c456f694971f08a79bbb1a738ffeb273f99122432b1009cbf4bd483884dd50ca115a64ef641

Download Submit
C:\Users\Admin\cog.exe

Filesize
145KB

MD5
262a039229f90ba2461f2e810ad74447

SHA1
9dfe5040a3d6ea8262313953c02a1e6ae39c6916

SHA256
e20729c3095a40a637efb304bdf57902cd4948f22406138e0dbdf28f034cedb3

SHA512
d7612cdbc38aea73462aa7851ab3078dfb89a1b4c96414f5d8144c456f694971f08a79bbb1a738ffeb273f99122432b1009cbf4bd483884dd50ca115a64ef641

Download Submit
C:\Users\Admin\feonuug.exe

Filesize
152KB

MD5
1e54e489f5399a533d72f403103eea0a

SHA1
91f73f9efe0ae8b85e4a58f581d611aab2e329d1

SHA256
f538058d7b051727fb0421af65b464dbcf7b65f2167b10aa1f0f8d5c40836734

SHA512
f862480307312a38bee565a1fe0d2290b4d50533c586639239d0dc779d2ed2855696ad961f0f62e05269a097dfb162dcc198a754f46d802d2c0382487d2e6a75

Download Submit
C:\Users\Admin\feonuug.exe

Filesize
152KB

MD5
1e54e489f5399a533d72f403103eea0a

SHA1
91f73f9efe0ae8b85e4a58f581d611aab2e329d1

SHA256
f538058d7b051727fb0421af65b464dbcf7b65f2167b10aa1f0f8d5c40836734

SHA512
f862480307312a38bee565a1fe0d2290b4d50533c586639239d0dc779d2ed2855696ad961f0f62e05269a097dfb162dcc198a754f46d802d2c0382487d2e6a75

Download Submit
memory/1136-142-0x0000000000000000-mapping.dmp

Download
memory/1772-157-0x0000000010000000-0x000000001001D000-memory.dmp

Filesize
116KB

Download
memory/1772-158-0x0000000002831000-0x000000000283F000-memory.dmp

Filesize
56KB

Download
memory/1772-154-0x0000000000000000-mapping.dmp

Download
memory/1864-147-0x00000000021C0000-0x0000000002218000-memory.dmp

Filesize
352KB

Download
memory/1864-151-0x00000000021C0000-0x0000000002218000-memory.dmp

Filesize
352KB

Download
memory/1864-152-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/1864-150-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/1864-135-0x0000000000000000-mapping.dmp

Download
memory/1864-141-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/3340-159-0x0000000000000000-mapping.dmp

Download
memory/3716-145-0x0000000000000000-mapping.dmp

Download
memory/3936-164-0x0000000000000000-mapping.dmp

Download
memory/4816-149-0x00000000022B1000-0x00000000022BF000-memory.dmp

Filesize
56KB

Download
memory/4816-146-0x0000000010000000-0x000000001001D000-memory.dmp

Filesize
116KB

Download
memory/4816-138-0x0000000000000000-mapping.dmp

Download
memory/4900-132-0x0000000000000000-mapping.dmp

Download