modiloader | bf571028ef5f71bd352b7828a1fbf9e9e869409d1f238b49d56d8bf0212444d4

Analysis

max time kernel
33s
max time network
36s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
12/03/2024, 11:34

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General

Target

c34243602d3897a8bd4ba4d20091c6ae.exe
Size

719KB
MD5

c34243602d3897a8bd4ba4d20091c6ae
SHA1

9997efe4bf0aba86a409d61feb9417b624bfeb20
SHA256

bf571028ef5f71bd352b7828a1fbf9e9e869409d1f238b49d56d8bf0212444d4
SHA512

d68cc0a567564941c80ea959c2ee7da0305800e9ce189bb1f51f9a550da2b98ead3247d9ff7f2b4989cab69ac878fb45faffb9b00fbcd36ba5bdcf28a87137a1
SSDEEP

12288:6XgPVmsO7H+JeYkZQors8sEyMGXxe+lX4EEPSwDfAmgBJbf8AwnBrRm8dZ/X:AoZ3J78GfX4bEmCb+rRvZ/X

Score

10^/10

modiloader bootkit persistence trojan

Malware Config

Signatures

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

ModiLoader Second Stage 3 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023246-19.dat	modiloader_stage2
behavioral2/memory/2208-38-0x0000000000400000-0x0000000000427000-memory.dmp	modiloader_stage2
behavioral2/files/0x0007000000023246-37.dat	modiloader_stage2

Executes dropped EXE 5 IoCs

pid	Process
1728	B85EgtCQKi4p6Z9Kt2.exe
1720	cod.exe
1824	cof.exe
2208	cog.exe
4976	cog.exe

Loads dropped DLL 1 IoCs

pid	Process
1328	rundll32.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Llawacaxojuxapi = "rundll32.exe \"C:\\Users\\Admin\\AppData\\Local\\uitur10.dll\",Startup"	rundll32.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

T1542.003

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2208 set thread context of 4976	2208	cog.exe	104

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
1728	B85EgtCQKi4p6Z9Kt2.exe
1728	B85EgtCQKi4p6Z9Kt2.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe
4976	cog.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeShutdownPrivilege	1720	cod.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1728	B85EgtCQKi4p6Z9Kt2.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 3528 wrote to memory of 1728	3528	c34243602d3897a8bd4ba4d20091c6ae.exe	97
PID 3528 wrote to memory of 1728	3528	c34243602d3897a8bd4ba4d20091c6ae.exe	97
PID 3528 wrote to memory of 1728	3528	c34243602d3897a8bd4ba4d20091c6ae.exe	97
PID 3528 wrote to memory of 1720	3528	c34243602d3897a8bd4ba4d20091c6ae.exe	98
PID 3528 wrote to memory of 1720	3528	c34243602d3897a8bd4ba4d20091c6ae.exe	98
PID 3528 wrote to memory of 1720	3528	c34243602d3897a8bd4ba4d20091c6ae.exe	98
PID 3528 wrote to memory of 1824	3528	c34243602d3897a8bd4ba4d20091c6ae.exe	99
PID 3528 wrote to memory of 1824	3528	c34243602d3897a8bd4ba4d20091c6ae.exe	99
PID 3528 wrote to memory of 1824	3528	c34243602d3897a8bd4ba4d20091c6ae.exe	99
PID 3528 wrote to memory of 2208	3528	c34243602d3897a8bd4ba4d20091c6ae.exe	100
PID 3528 wrote to memory of 2208	3528	c34243602d3897a8bd4ba4d20091c6ae.exe	100
PID 3528 wrote to memory of 2208	3528	c34243602d3897a8bd4ba4d20091c6ae.exe	100
PID 3528 wrote to memory of 384	3528	c34243602d3897a8bd4ba4d20091c6ae.exe	101
PID 3528 wrote to memory of 384	3528	c34243602d3897a8bd4ba4d20091c6ae.exe	101
PID 3528 wrote to memory of 384	3528	c34243602d3897a8bd4ba4d20091c6ae.exe	101
PID 2208 wrote to memory of 4976	2208	cog.exe	104
PID 2208 wrote to memory of 4976	2208	cog.exe	104
PID 2208 wrote to memory of 4976	2208	cog.exe	104
PID 2208 wrote to memory of 4976	2208	cog.exe	104
PID 2208 wrote to memory of 4976	2208	cog.exe	104
PID 2208 wrote to memory of 4976	2208	cog.exe	104
PID 2208 wrote to memory of 4976	2208	cog.exe	104
PID 2208 wrote to memory of 4976	2208	cog.exe	104
PID 2208 wrote to memory of 4976	2208	cog.exe	104
PID 2208 wrote to memory of 4976	2208	cog.exe	104
PID 1824 wrote to memory of 1328	1824	cof.exe	105
PID 1824 wrote to memory of 1328	1824	cof.exe	105
PID 1824 wrote to memory of 1328	1824	cof.exe	105

C:\Users\Admin\AppData\Local\Temp\c34243602d3897a8bd4ba4d20091c6ae.exe
"C:\Users\Admin\AppData\Local\Temp\c34243602d3897a8bd4ba4d20091c6ae.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3528
- C:\Users\Admin\B85EgtCQKi4p6Z9Kt2.exe
  B85EgtCQKi4p6Z9Kt2.exe
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:1728
- C:\Users\Admin\cod.exe
  cod.exe
  2⤵
  - Executes dropped EXE
  - Writes to the Master Boot Record (MBR)
  - Suspicious use of AdjustPrivilegeToken
  PID:1720
- C:\Users\Admin\cof.exe
  cof.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:1824
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe "C:\Users\Admin\AppData\Local\uitur10.dll",Startup
    3⤵
    - Loads dropped DLL
    - Adds Run key to start application
    PID:1328
- C:\Users\Admin\cog.exe
  cog.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:2208
- - C:\Users\Admin\cog.exe
    cog.exe
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    PID:4976
- C:\Windows\SysWOW64\cmd.exe
  cmd /c del c34243602d3897a8bd4ba4d20091c6ae.exe
  2⤵
  PID:384

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\uitur10.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\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\cog.exe

Filesize
145KB

MD5
262a039229f90ba2461f2e810ad74447

SHA1
9dfe5040a3d6ea8262313953c02a1e6ae39c6916

SHA256
e20729c3095a40a637efb304bdf57902cd4948f22406138e0dbdf28f034cedb3

SHA512
d7612cdbc38aea73462aa7851ab3078dfb89a1b4c96414f5d8144c456f694971f08a79bbb1a738ffeb273f99122432b1009cbf4bd483884dd50ca115a64ef641

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

Filesize
128KB

MD5
1ec64f454dc818345b135354eb151a04

SHA1
39cf228a0652cbac32714f36e08c9152d863f4ae

SHA256
d3a1ecd033f4dc676d3e94753a0fdb8960543d4af859882708db8c6a8039b76a

SHA512
c4ec705d877839cc4f23c57513fa0b0e09ddfef31bccec83620531aab306f1c5cda9d4d2d2da49a6e064e549308352226fd057417ace8c205e5e65733c631911

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

Filesize
152KB

MD5
6cda64107be36e453423fc0fa4bef861

SHA1
0fc1468c3e143b52b6c6e4a1ff69c69a28c63532

SHA256
b267eb23f7c03eca863c843222e006f94b72cea0c872ba12d929816e361f2644

SHA512
af25db12ae775a7de71bd992dfa787ad2b27473e1ea82ff3632535eb848c470b5275bea5e3df56224d123b47d514dca27d5a73182c289e60113c999ef12f3f32

Download Submit
memory/1328-56-0x0000000010000000-0x000000001001D000-memory.dmp

Filesize
116KB

Download
memory/1328-59-0x0000000000650000-0x0000000000660000-memory.dmp

Filesize
64KB

Download
memory/1328-57-0x0000000000650000-0x0000000000660000-memory.dmp

Filesize
64KB

Download
memory/1328-55-0x0000000010000000-0x000000001001D000-memory.dmp

Filesize
116KB

Download
memory/1328-64-0x0000000010000000-0x000000001001D000-memory.dmp

Filesize
116KB

Download
memory/1720-29-0x00000000021F1000-0x00000000021F2000-memory.dmp

Filesize
4KB

Download
memory/1720-28-0x00000000021F0000-0x0000000002248000-memory.dmp

Filesize
352KB

Download
memory/1720-27-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/1720-25-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/1720-24-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/1720-14-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/1720-43-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/1824-23-0x0000000010000000-0x000000001001D000-memory.dmp

Filesize
116KB

Download
memory/1824-21-0x0000000002190000-0x00000000021A0000-memory.dmp

Filesize
64KB

Download
memory/1824-22-0x0000000002190000-0x00000000021A0000-memory.dmp

Filesize
64KB

Download
memory/1824-50-0x0000000010000000-0x000000001001D000-memory.dmp

Filesize
116KB

Download
memory/2208-38-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/4976-32-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4976-30-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4976-34-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4976-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4976-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4976-35-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4976-33-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download