modiloader | b15c077ddde6f48500214b104b95efcb49f8296c141a234ced13b32cd4bcf9e6

Analysis

max time kernel
64s
max time network
116s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
29-11-2022 18:07

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General

Target

b15c077ddde6f48500214b104b95efcb49f8296c141a234ced13b32cd4bcf9e6.exe
Size

719KB
MD5

49b34d4038fb31ddf44350350c83733a
SHA1

99e7d41d46a432058ec4b6a5460e57a5be756965
SHA256

b15c077ddde6f48500214b104b95efcb49f8296c141a234ced13b32cd4bcf9e6
SHA512

7374c1bee6b245d5c7fd597b71792703d3bedc5e0817b3c7cb27d6a55434ce7572335a815b8599bf11805d61a809c7f1aa8c644188211e10da9276c095d1e66d
SSDEEP

12288:6XgPVmsO7H+JeYkZQors8sEyMGXxeDlX4EEPSwDfAmgBJbf8AwnBrRm8dZ/X:AoZ3J78GQX4bEmCb+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-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	B85EgtCQKi4p6Z9Kt2.exe

ModiLoader Second Stage 2 IoCs

Processes:

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

Executes dropped EXE 5 IoCs

Processes:

B85EgtCQKi4p6Z9Kt2.execod.execof.execog.exetuaiwup.exe

pid process

2284 B85EgtCQKi4p6Z9Kt2.exe
1952 cod.exe
3040 cof.exe
4612 cog.exe
64 tuaiwup.exe

pid	process
2284	B85EgtCQKi4p6Z9Kt2.exe
1952	cod.exe
3040	cof.exe
4612	cog.exe
64	tuaiwup.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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	B85EgtCQKi4p6Z9Kt2.exe

Loads dropped DLL 2 IoCs

Processes:

rundll32.exerundll32.exe

pid process

4912 rundll32.exe
2312 rundll32.exe

pid	process
4912	rundll32.exe
2312	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-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Vvolusukasev = "rundll32.exe \"C:\\Users\\Admin\\AppData\\Local\\milsesi.dll\",Startup"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run\	B85EgtCQKi4p6Z9Kt2.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\tuaiwup = "C:\\Users\\Admin\\tuaiwup.exe /W"	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
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

B85EgtCQKi4p6Z9Kt2.exerundll32.exe

pid process

2284 B85EgtCQKi4p6Z9Kt2.exe
2284 B85EgtCQKi4p6Z9Kt2.exe
4912 rundll32.exe
4912 rundll32.exe
2284 B85EgtCQKi4p6Z9Kt2.exe
2284 B85EgtCQKi4p6Z9Kt2.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

cod.exe

description pid process

Token: SeShutdownPrivilege 1952 cod.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

B85EgtCQKi4p6Z9Kt2.exetuaiwup.exe

pid process

2284 B85EgtCQKi4p6Z9Kt2.exe
64 tuaiwup.exe

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

pid	process
2284	B85EgtCQKi4p6Z9Kt2.exe
2284	B85EgtCQKi4p6Z9Kt2.exe
4912	rundll32.exe
4912	rundll32.exe
2284	B85EgtCQKi4p6Z9Kt2.exe
2284	B85EgtCQKi4p6Z9Kt2.exe

description	pid	process
Token: SeShutdownPrivilege	1952	cod.exe

pid	process
2284	B85EgtCQKi4p6Z9Kt2.exe
64	tuaiwup.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

b15c077ddde6f48500214b104b95efcb49f8296c141a234ced13b32cd4bcf9e6.execof.exerundll32.exeB85EgtCQKi4p6Z9Kt2.exe

description	pid	process	target process
PID 1328 wrote to memory of 2284	1328	b15c077ddde6f48500214b104b95efcb49f8296c141a234ced13b32cd4bcf9e6.exe	B85EgtCQKi4p6Z9Kt2.exe
PID 1328 wrote to memory of 2284	1328	b15c077ddde6f48500214b104b95efcb49f8296c141a234ced13b32cd4bcf9e6.exe	B85EgtCQKi4p6Z9Kt2.exe
PID 1328 wrote to memory of 2284	1328	b15c077ddde6f48500214b104b95efcb49f8296c141a234ced13b32cd4bcf9e6.exe	B85EgtCQKi4p6Z9Kt2.exe
PID 1328 wrote to memory of 1952	1328	b15c077ddde6f48500214b104b95efcb49f8296c141a234ced13b32cd4bcf9e6.exe	cod.exe
PID 1328 wrote to memory of 1952	1328	b15c077ddde6f48500214b104b95efcb49f8296c141a234ced13b32cd4bcf9e6.exe	cod.exe
PID 1328 wrote to memory of 1952	1328	b15c077ddde6f48500214b104b95efcb49f8296c141a234ced13b32cd4bcf9e6.exe	cod.exe
PID 1328 wrote to memory of 3040	1328	b15c077ddde6f48500214b104b95efcb49f8296c141a234ced13b32cd4bcf9e6.exe	cof.exe
PID 1328 wrote to memory of 3040	1328	b15c077ddde6f48500214b104b95efcb49f8296c141a234ced13b32cd4bcf9e6.exe	cof.exe
PID 1328 wrote to memory of 3040	1328	b15c077ddde6f48500214b104b95efcb49f8296c141a234ced13b32cd4bcf9e6.exe	cof.exe
PID 1328 wrote to memory of 4612	1328	b15c077ddde6f48500214b104b95efcb49f8296c141a234ced13b32cd4bcf9e6.exe	cog.exe
PID 1328 wrote to memory of 4612	1328	b15c077ddde6f48500214b104b95efcb49f8296c141a234ced13b32cd4bcf9e6.exe	cog.exe
PID 1328 wrote to memory of 4612	1328	b15c077ddde6f48500214b104b95efcb49f8296c141a234ced13b32cd4bcf9e6.exe	cog.exe
PID 1328 wrote to memory of 4776	1328	b15c077ddde6f48500214b104b95efcb49f8296c141a234ced13b32cd4bcf9e6.exe	cmd.exe
PID 1328 wrote to memory of 4776	1328	b15c077ddde6f48500214b104b95efcb49f8296c141a234ced13b32cd4bcf9e6.exe	cmd.exe
PID 1328 wrote to memory of 4776	1328	b15c077ddde6f48500214b104b95efcb49f8296c141a234ced13b32cd4bcf9e6.exe	cmd.exe
PID 3040 wrote to memory of 4912	3040	cof.exe	rundll32.exe
PID 3040 wrote to memory of 4912	3040	cof.exe	rundll32.exe
PID 3040 wrote to memory of 4912	3040	cof.exe	rundll32.exe
PID 4912 wrote to memory of 2312	4912	rundll32.exe	rundll32.exe
PID 4912 wrote to memory of 2312	4912	rundll32.exe	rundll32.exe
PID 4912 wrote to memory of 2312	4912	rundll32.exe	rundll32.exe
PID 2284 wrote to memory of 64	2284	B85EgtCQKi4p6Z9Kt2.exe	tuaiwup.exe
PID 2284 wrote to memory of 64	2284	B85EgtCQKi4p6Z9Kt2.exe	tuaiwup.exe
PID 2284 wrote to memory of 64	2284	B85EgtCQKi4p6Z9Kt2.exe	tuaiwup.exe

C:\Users\Admin\AppData\Local\Temp\b15c077ddde6f48500214b104b95efcb49f8296c141a234ced13b32cd4bcf9e6.exe
"C:\Users\Admin\AppData\Local\Temp\b15c077ddde6f48500214b104b95efcb49f8296c141a234ced13b32cd4bcf9e6.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1328

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:2284

C:\Users\Admin\tuaiwup.exe
"C:\Users\Admin\tuaiwup.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:64

C:\Windows\SysWOW64\verclsid.exe
"C:\Windows\system32\verclsid.exe" /S /C {F5FB2C77-0E2F-4A16-A381-3E560C68BC83} /I {ADD8BA80-002B-11D0-8F0F-00C04FD7D062} /X 0x401
3⤵
PID:1168

C:\Users\Admin\cod.exe
cod.exe
2⤵
- Executes dropped EXE
- Writes to the Master Boot Record (MBR)
- Suspicious use of AdjustPrivilegeToken
PID:1952

C:\Users\Admin\cof.exe
cof.exe
2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:3040

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\milsesi.dll",Startup
3⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4912

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\milsesi.dll",iep
4⤵
- Loads dropped DLL
PID:2312

C:\Users\Admin\cog.exe
cog.exe
2⤵
- Executes dropped EXE
PID:4612

C:\Windows\SysWOW64\cmd.exe
cmd /c del b15c077ddde6f48500214b104b95efcb49f8296c141a234ced13b32cd4bcf9e6.exe
2⤵
PID:4776

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Registry Run Keys / Startup Folder

T1060

Bootkit

T1067

Privilege Escalation

Defense Evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\milsesi.dll
Filesize
103KB

MD5
be60099ceffb0aece0bc0c52998e9d65

SHA1
6ff11181390b5eccfb9a832ea5311d58bcc7a3a3

SHA256
e41f195954abff7c7bdc150773ad9f0b4029a883386ac179c1aa9d44f9ab6e4a

SHA512
c4beef5b86370a959b624041cc2db1de2da07a15df17077d728ea74036398fd1e62b6e7e147c53ea944606d751d0934f423b70193ad570a8cba097a823facdc0

Download Submit
C:\Users\Admin\AppData\Local\milsesi.dll
Filesize
103KB

MD5
be60099ceffb0aece0bc0c52998e9d65

SHA1
6ff11181390b5eccfb9a832ea5311d58bcc7a3a3

SHA256
e41f195954abff7c7bdc150773ad9f0b4029a883386ac179c1aa9d44f9ab6e4a

SHA512
c4beef5b86370a959b624041cc2db1de2da07a15df17077d728ea74036398fd1e62b6e7e147c53ea944606d751d0934f423b70193ad570a8cba097a823facdc0

Download Submit
C:\Users\Admin\AppData\Local\milsesi.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\tuaiwup.exe
Filesize
152KB

MD5
ce3c2945f9d77dd365ce0e8896b7be3c

SHA1
e599709460549d275170dc8351e3199fa7cafe46

SHA256
a98b3755f520e76a2f5bfa6f778ec37421114c25b527e1346117d1c5f18b8f94

SHA512
d869c2a6b8d6312a9c5024dde91908bfdc6f22216cb7acf99284ee527a2300dc819c6a724c4ddfd6dba4debfe418f76adb2c9a33301ba46e2a26d6303625a49c

Download Submit
C:\Users\Admin\tuaiwup.exe
Filesize
152KB

MD5
ce3c2945f9d77dd365ce0e8896b7be3c

SHA1
e599709460549d275170dc8351e3199fa7cafe46

SHA256
a98b3755f520e76a2f5bfa6f778ec37421114c25b527e1346117d1c5f18b8f94

SHA512
d869c2a6b8d6312a9c5024dde91908bfdc6f22216cb7acf99284ee527a2300dc819c6a724c4ddfd6dba4debfe418f76adb2c9a33301ba46e2a26d6303625a49c

Download Submit
memory/64-160-0x0000000000000000-mapping.dmp

Download
memory/1952-148-0x00000000005A0000-0x00000000005F8000-memory.dmp

Filesize
352KB

Download
memory/1952-150-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/1952-153-0x00000000005A0000-0x00000000005F8000-memory.dmp

Filesize
352KB

Download
memory/1952-158-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/1952-141-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/1952-135-0x0000000000000000-mapping.dmp

Download
memory/2284-132-0x0000000000000000-mapping.dmp

Download
memory/2312-167-0x0000000002AF1000-0x0000000002AFF000-memory.dmp

Filesize
56KB

Download
memory/2312-159-0x0000000000000000-mapping.dmp

Download
memory/3040-146-0x0000000010000000-0x000000001001D000-memory.dmp

Filesize
116KB

Download
memory/3040-151-0x0000000002271000-0x000000000227F000-memory.dmp

Filesize
56KB

Download
memory/3040-138-0x0000000000000000-mapping.dmp

Download
memory/4612-142-0x0000000000000000-mapping.dmp

Download
memory/4776-145-0x0000000000000000-mapping.dmp

Download
memory/4912-157-0x0000000002FD1000-0x0000000002FDF000-memory.dmp

Filesize
56KB

Download
memory/4912-156-0x0000000010000000-0x000000001001D000-memory.dmp

Filesize
116KB

Download
memory/4912-152-0x0000000000000000-mapping.dmp

Download