modiloader | c42cbf2a4ad7612109535b71965bd6f8cea193e18d96ea1a830cd2d465fc9294

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
22/04/2024, 12:42

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General

Target

Quotation 20242204.exe
Size

1.6MB
MD5

603c7916d424615645d6ee0fffa00011
SHA1

6f464f23eb81606067f93036dc5cdc61f7bb855b
SHA256

25adcfe6b38aead70b4b0020ecba72d0343b6f3d3bb406100593b7f1349e0300
SHA512

f400834902c5886b680fa8376fee88c77ec352b0a00221e98fbe268d71ac6feb0826fb5c53d71cb66cc457d6b3a64c3c881f059dd75bb9b097d51868ea07cf90
SSDEEP

24576:7MkT4gLKu9KKozJQd/HJNRO/BqM6wIJp4m+3bu8U2flxAv:QkTpT9K1mzyqM6wW4mEQ2W

Score

10^/10

modiloader remcos remotehost persistence rat trojan

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

127.0.0.1:47212

officerem.duckdns.org:47212

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-I8N3XG
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
trojan modiloader
Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

ModiLoader Second Stage 1 IoCs

resource	yara_rule
behavioral2/memory/3444-2-0x0000000002D80000-0x0000000003D80000-memory.dmp	modiloader_stage2

Executes dropped EXE 2 IoCs

pid	Process
4940	easinvoker.exe
3540	alpha.exe

Loads dropped DLL 1 IoCs

pid	Process
4940	easinvoker.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-1-5-21-2177723727-746291240-1644359950-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rwksdoeb = "C:\\Users\\Public\\Rwksdoeb.url"	Quotation 20242204.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	xcopy.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	xcopy.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	xcopy.exe

Script User-Agent 1 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	42	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1784	powershell.exe
1784	powershell.exe
1784	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1784	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3444	Quotation 20242204.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 3444 wrote to memory of 2344	3444	Quotation 20242204.exe	98
PID 3444 wrote to memory of 2344	3444	Quotation 20242204.exe	98
PID 3444 wrote to memory of 2344	3444	Quotation 20242204.exe	98
PID 2344 wrote to memory of 2296	2344	cmd.exe	100
PID 2344 wrote to memory of 2296	2344	cmd.exe	100
PID 2344 wrote to memory of 2296	2344	cmd.exe	100
PID 2344 wrote to memory of 3228	2344	cmd.exe	101
PID 2344 wrote to memory of 3228	2344	cmd.exe	101
PID 2344 wrote to memory of 3228	2344	cmd.exe	101
PID 2344 wrote to memory of 1344	2344	cmd.exe	102
PID 2344 wrote to memory of 1344	2344	cmd.exe	102
PID 2344 wrote to memory of 1344	2344	cmd.exe	102
PID 2344 wrote to memory of 3116	2344	cmd.exe	103
PID 2344 wrote to memory of 3116	2344	cmd.exe	103
PID 2344 wrote to memory of 3116	2344	cmd.exe	103
PID 2344 wrote to memory of 324	2344	cmd.exe	104
PID 2344 wrote to memory of 324	2344	cmd.exe	104
PID 2344 wrote to memory of 324	2344	cmd.exe	104
PID 2344 wrote to memory of 1996	2344	cmd.exe	105
PID 2344 wrote to memory of 1996	2344	cmd.exe	105
PID 2344 wrote to memory of 1996	2344	cmd.exe	105
PID 2344 wrote to memory of 4940	2344	cmd.exe	106
PID 2344 wrote to memory of 4940	2344	cmd.exe	106
PID 4940 wrote to memory of 1260	4940	easinvoker.exe	107
PID 4940 wrote to memory of 1260	4940	easinvoker.exe	107
PID 1260 wrote to memory of 2500	1260	cmd.exe	109
PID 1260 wrote to memory of 2500	1260	cmd.exe	109
PID 1260 wrote to memory of 3540	1260	cmd.exe	110
PID 1260 wrote to memory of 3540	1260	cmd.exe	110
PID 3540 wrote to memory of 1784	3540	alpha.exe	111
PID 3540 wrote to memory of 1784	3540	alpha.exe	111
PID 3444 wrote to memory of 2044	3444	Quotation 20242204.exe	113
PID 3444 wrote to memory of 2044	3444	Quotation 20242204.exe	113
PID 3444 wrote to memory of 2044	3444	Quotation 20242204.exe	113

C:\Users\Admin\AppData\Local\Temp\Quotation 20242204.exe
"C:\Users\Admin\AppData\Local\Temp\Quotation 20242204.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3444
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Public\Libraries\RwksdoebO.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2344
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
    3⤵
    PID:2296
- - C:\Windows\SysWOW64\xcopy.exe
    xcopy "easinvoker.exe" "C:\Windows \System32\" /K /D /H /Y
    3⤵
    - Enumerates system info in registry
    PID:3228
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
    3⤵
    PID:1344
- - C:\Windows\SysWOW64\xcopy.exe
    xcopy "Aaa.bat" "C:\Windows \System32\" /K /D /H /Y
    3⤵
    - Enumerates system info in registry
    PID:3116
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
    3⤵
    PID:324
- - C:\Windows\SysWOW64\xcopy.exe
    xcopy "netutils.dll" "C:\Windows \System32\" /K /D /H /Y
    3⤵
    - Enumerates system info in registry
    PID:1996
- - C:\Windows \System32\easinvoker.exe
    "C:\Windows \System32\easinvoker.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of WriteProcessMemory
    PID:4940
  - - C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\windows \system32\aaa.bat""
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1260
    - - C:\Windows\System32\extrac32.exe
        
        C:\\Windows\\System32\\extrac32.exe /C /Y C:\\Windows\\System32\\cmd.exe C:\\Users\\Public\\alpha.exe
        5⤵
        
        PID:2500
    - - C:\Users\Public\alpha.exe
        
        C:\\Users\\Public\\alpha /c powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"
        5⤵
        Executes dropped EXE
        Suspicious use of WriteProcessMemory
        
        PID:3540
      - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"
        6⤵
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1784
- C:\Windows\SysWOW64\extrac32.exe
  C:\\Windows\\System32\\extrac32.exe /C /Y C:\Users\Admin\AppData\Local\Temp\Quotation 20242204.exe C:\\Users\\Public\\Libraries\\Rwksdoeb.PIF
  2⤵
  PID:2044

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

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
e986b84d771ed10459f6040c78d9eda6

SHA1
1ed3a5d87d8be52133a630a0b7facfef8f90d722

SHA256
361314c28f848c75b7c4d8473ae36541e39eb31bed3983bcd3e144ae7328d528

SHA512
66a5756d0425c2290155c2f47d09dbdd684a8dc022efde8a39c9f96bd3a792b168c7141fadb24ba028f452684ea4b986c5cf80dca7d17ddc5616d10b7576ecb8

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_xbh5n0jr.uf5.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Public\Libraries\RwksdoebO.bat

Filesize
29KB

MD5
828ffbf60677999579dafe4bf3919c63

SHA1
a0d159a1b9a49e9eaccc53fe0c3266c0526a1bdc

SHA256
abac4a967800f5da708572ec42441ec373cd52459a83a8a382d6b8579482789d

SHA512
bf00909e24c5a6fb2346e8457a9adacd5f1b35988d90abbde9ff26896bbb59edafea60d9db4d10182a7b5e129bb69585d3e20bc5c63af3517b3a7ef1e45ffb7e

Download Submit
C:\Users\Public\Libraries\aaa.bat

Filesize
3KB

MD5
71e46efe9932b83b397b44052513fb49

SHA1
741af3b8c31095a0cc2c39c41e62279684913205

SHA256
11c20fabf677cd77e8a354b520f6ffca09cac37ce15c9932550e749e49efe08a

SHA512
76da3b441c0eaaaabdd4d21b0a3d4aa7fd49d73a5f0dab2cfb39f2e114efe4f4dabe2d46b01b66d810d6e0efa97676599ece5c213c1a69a5f2f4897a9b4ac8da

Download Submit
C:\Users\Public\Libraries\easinvoker.exe

Filesize
128KB

MD5
231ce1e1d7d98b44371ffff407d68b59

SHA1
25510d0f6353dbf0c9f72fc880de7585e34b28ff

SHA256
30951db8bfc21640645aa9144cfeaa294bb7c6980ef236d28552b6f4f3f92a96

SHA512
520887b01bda96b7c4f91b9330a5c03a12f7c7f266d4359432e7bacc76b0eef377c05a4361f8fa80ad0b94b5865699d747a5d94a2d3dcdb85dabf5887bb6c612

Download Submit
C:\Users\Public\Libraries\netutils.dll

Filesize
114KB

MD5
566b326055c3ed8e2028aa1e2c1054d0

SHA1
c25fa6d6369c083526cafcf45b5f554635afe218

SHA256
a692d4305b95e57e2cfc871d53a41a5bfc9e306cb1a86ca1159db4f469598714

SHA512
da4b0b45d47757b69f9abc1817d3cb3c85deb08658e55f07b016fba053efe541a5791b9b2b380c25b440bbae6916c5a2245261553ca3c5025d9d55c943f9823c

Download Submit
C:\Users\Public\alpha.exe

Filesize
283KB

MD5
8a2122e8162dbef04694b9c3e0b6cdee

SHA1
f1efb0fddc156e4c61c5f78a54700e4e7984d55d

SHA256
b99d61d874728edc0918ca0eb10eab93d381e7367e377406e65963366c874450

SHA512
99e784141193275d4364ba1b8762b07cc150ca3cb7e9aa1d4386ba1fa87e073d0500e61572f8d1b071f2faa2a51bb123e12d9d07054b59a1a2fd768ad9f24397

Download Submit
memory/1784-42-0x00007FFA823D0000-0x00007FFA82E91000-memory.dmp

Filesize
10.8MB

Download
memory/1784-47-0x00007FFA823D0000-0x00007FFA82E91000-memory.dmp

Filesize
10.8MB

Download
memory/1784-44-0x000001A175DE0000-0x000001A175DF0000-memory.dmp

Filesize
64KB

Download
memory/1784-43-0x000001A175DE0000-0x000001A175DF0000-memory.dmp

Filesize
64KB

Download
memory/1784-32-0x000001A175E20000-0x000001A175E42000-memory.dmp

Filesize
136KB

Download
memory/3444-54-0x0000000015760000-0x0000000016760000-memory.dmp

Filesize
16.0MB

Download
memory/3444-59-0x0000000015760000-0x0000000016760000-memory.dmp

Filesize
16.0MB

Download
memory/3444-4-0x0000000000400000-0x0000000000598000-memory.dmp

Filesize
1.6MB

Download
memory/3444-2-0x0000000002D80000-0x0000000003D80000-memory.dmp

Filesize
16.0MB

Download
memory/3444-51-0x0000000015760000-0x0000000016760000-memory.dmp

Filesize
16.0MB

Download
memory/3444-53-0x0000000015760000-0x0000000016760000-memory.dmp

Filesize
16.0MB

Download
memory/3444-0-0x0000000002300000-0x0000000002301000-memory.dmp

Filesize
4KB

Download
memory/3444-55-0x0000000015760000-0x0000000016760000-memory.dmp

Filesize
16.0MB

Download
memory/3444-56-0x0000000015760000-0x0000000016760000-memory.dmp

Filesize
16.0MB

Download
memory/3444-57-0x0000000015760000-0x0000000016760000-memory.dmp

Filesize
16.0MB

Download
memory/3444-58-0x0000000015760000-0x0000000016760000-memory.dmp

Filesize
16.0MB

Download
memory/3444-107-0x0000000015760000-0x0000000016760000-memory.dmp

Filesize
16.0MB

Download
memory/3444-63-0x0000000015760000-0x0000000016760000-memory.dmp

Filesize
16.0MB

Download
memory/3444-64-0x0000000015760000-0x0000000016760000-memory.dmp

Filesize
16.0MB

Download
memory/3444-1-0x0000000002D80000-0x0000000003D80000-memory.dmp

Filesize
16.0MB

Download
memory/3444-75-0x0000000015760000-0x0000000016760000-memory.dmp

Filesize
16.0MB

Download
memory/3444-88-0x0000000015760000-0x0000000016760000-memory.dmp

Filesize
16.0MB

Download
memory/3444-89-0x0000000015760000-0x0000000016760000-memory.dmp

Filesize
16.0MB

Download
memory/3444-90-0x0000000015760000-0x0000000016760000-memory.dmp

Filesize
16.0MB

Download
memory/3444-91-0x0000000015760000-0x0000000016760000-memory.dmp

Filesize
16.0MB

Download
memory/3444-100-0x0000000015760000-0x0000000016760000-memory.dmp

Filesize
16.0MB

Download
memory/3444-102-0x0000000015760000-0x0000000016760000-memory.dmp

Filesize
16.0MB

Download
memory/3444-106-0x0000000015760000-0x0000000016760000-memory.dmp

Filesize
16.0MB

Download
memory/4940-25-0x00000000613C0000-0x00000000613E3000-memory.dmp

Filesize
140KB

Download