modiloader | 373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
27/03/2024, 02:12

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General

Target
373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe
Size 1.1MB
Sample240327-cmzf2sdb91
SHA256 373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3
MD5 7f9d54f2643b695c21d8fb560e72106a
SHA1 ecc78cd91c127a66929642ff7c901c17f5e55952
SHA512 b3c6797b6ca2ee33ccb907af9eae5e0b609030f24baed60f6776c2bf14aab58a1bff70c6218f3297198e9382ce4aa020ae9484bd00ee2ea25a446bb9e85a102b
SSDEEP 24576:llAinAzO5SRz+HJ0dkGdiNhp/BRaR6URr0GDp6eL:llAc5StANPpRaR6URrNp
MD5 SHA1 SHA512 SSDEEP

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

Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 22 IoCs

resource	yara_rule
behavioral2/memory/2040-42-0x00000000006E0000-0x00000000016E0000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2040-44-0x00000000006E0000-0x00000000016E0000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2040-45-0x00000000006E0000-0x00000000016E0000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2040-46-0x00000000006E0000-0x00000000016E0000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2040-47-0x00000000006E0000-0x00000000016E0000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2040-48-0x00000000006E0000-0x00000000016E0000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2040-51-0x00000000006E0000-0x00000000016E0000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2040-52-0x00000000006E0000-0x00000000016E0000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2040-54-0x00000000006E0000-0x00000000016E0000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2040-56-0x00000000006E0000-0x00000000016E0000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2040-62-0x00000000006E0000-0x00000000016E0000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2040-64-0x00000000006E0000-0x00000000016E0000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2040-65-0x00000000006E0000-0x00000000016E0000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2040-67-0x00000000006E0000-0x00000000016E0000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2040-68-0x00000000006E0000-0x00000000016E0000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2040-69-0x00000000006E0000-0x00000000016E0000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2040-73-0x00000000006E0000-0x00000000016E0000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2040-74-0x00000000006E0000-0x00000000016E0000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2040-81-0x00000000006E0000-0x00000000016E0000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2040-82-0x00000000006E0000-0x00000000016E0000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2040-89-0x00000000006E0000-0x00000000016E0000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
behavioral2/memory/2040-90-0x00000000006E0000-0x00000000016E0000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM

ModiLoader Second Stage 1 IoCs

resource	yara_rule
behavioral2/memory/1380-2-0x0000000004070000-0x0000000005070000-memory.dmp	modiloader_stage2

Executes dropped EXE 1 IoCs

pid	Process
740	2226800.exe

Loads dropped DLL 1 IoCs

pid	Process
740	2226800.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-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Qbijgrcm = "C:\\Users\\Public\\Qbijgrcm.url"	373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe

Script User-Agent 1 IoCs

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

description	flow	ioc
HTTP User-Agent header	32	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2036	powershell.exe
2036	powershell.exe
2036	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2036	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2040	colorcpl.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1380 wrote to memory of 1708	1380	373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe	93
PID 1380 wrote to memory of 1708	1380	373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe	93
PID 1380 wrote to memory of 1708	1380	373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe	93
PID 1380 wrote to memory of 4624	1380	373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe	94
PID 1380 wrote to memory of 4624	1380	373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe	94
PID 1380 wrote to memory of 4624	1380	373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe	94
PID 1380 wrote to memory of 4832	1380	373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe	102
PID 1380 wrote to memory of 4832	1380	373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe	102
PID 1380 wrote to memory of 4832	1380	373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe	102
PID 4832 wrote to memory of 740	4832	cmd.exe	104
PID 4832 wrote to memory of 740	4832	cmd.exe	104
PID 740 wrote to memory of 2256	740	2226800.exe	105
PID 740 wrote to memory of 2256	740	2226800.exe	105
PID 2256 wrote to memory of 4388	2256	cmd.exe	107
PID 2256 wrote to memory of 4388	2256	cmd.exe	107
PID 4388 wrote to memory of 2036	4388	cmd.exe	109
PID 4388 wrote to memory of 2036	4388	cmd.exe	109
PID 1380 wrote to memory of 3936	1380	373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe	111
PID 1380 wrote to memory of 3936	1380	373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe	111
PID 1380 wrote to memory of 3936	1380	373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe	111
PID 1380 wrote to memory of 2040	1380	373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe	112
PID 1380 wrote to memory of 2040	1380	373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe	112
PID 1380 wrote to memory of 2040	1380	373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe	112
PID 1380 wrote to memory of 2040	1380	373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe	112

C:\Users\Admin\AppData\Local\Temp\373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe
"C:\Users\Admin\AppData\Local\Temp\373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1380
- C:\Windows\SysWOW64\cmd.exe
  cmd /c mkdir "\\?\C:\Windows "
  2⤵
  PID:1708
- C:\Windows\SysWOW64\cmd.exe
  cmd /c mkdir "\\?\C:\Windows \System32"
  2⤵
  PID:4624
- C:\Windows\SysWOW64\cmd.exe
  cmd /c "C:\Windows \System32\2226800.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4832
- - C:\Windows \System32\2226800.exe
    "C:\Windows \System32\2226800.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of WriteProcessMemory
    PID:740
  - - C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\windows \system32\KDECO.bat""
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2256
    - - C:\Windows\system32\cmd.exe
        
        cmd /c powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:4388
      - 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:2036
- C:\Windows\SysWOW64\extrac32.exe
  C:\\Windows\\System32\\extrac32.exe /C /Y C:\Users\Admin\AppData\Local\Temp\373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe C:\\Users\\Public\\Libraries\\Qbijgrcm.PIF
  2⤵
  PID:3936
- C:\Windows\SysWOW64\colorcpl.exe
  C:\Windows\System32\colorcpl.exe
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:2040

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

logs.dat

Path C:\ProgramData\remcos\logs.dat
Size 144B
SHA256 4ff242c76ea1e366416d8b1206cef73be86c753303783f8002a83a49994101c8
MD5 4eef9168ab508697d5d0d3ef05e6785e
SHA1 09491cb90fc57aba262324f8a4c7fcb0faf4d516
SHA512 046ce2b98b34c903bcde3c10fcd1a906aa2b090cbe2905a79e040d84e14bfe4107765518bc129e58aa2fc189e45bc21c8d12fd19990848f88f13cc3d8e71dc3e
MD5 SHA1 SHA512

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__PSScriptPolicyTest_2vyp501p.elz.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2vyp501p.elz.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

Submit Download

2226800.exe

Path C:\Windows \System32\2226800.exe
Size 128KB
SHA256 30951db8bfc21640645aa9144cfeaa294bb7c6980ef236d28552b6f4f3f92a96
MD5 231ce1e1d7d98b44371ffff407d68b59
SHA1 25510d0f6353dbf0c9f72fc880de7585e34b28ff
SHA512 520887b01bda96b7c4f91b9330a5c03a12f7c7f266d4359432e7bacc76b0eef377c05a4361f8fa80ad0b94b5865699d747a5d94a2d3dcdb85dabf5887bb6c612
SSDEEP 3072:zar2xXibKcf5K67+k02XbFbosspwUUgcR:Nibl7+k02XZb9UA
MD5 SHA1 SHA512 SSDEEP

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netutils.dll

Path C:\Windows \System32\netutils.dll
Size 112KB
SHA256 2019dcd18ba7d5554a4a9da882740aa883941670af3de9396960081a0f8aa098
MD5 fa7aa88417d0c48807144a1a48fe3fbc
SHA1 6f5ec990b12d4a6075050a94e0d68d03781fa46d
SHA512 99b2eb6f8e7d00a3803cba229149e5e0cb67a3deb607782c55fbacd25d9c074cce83759de15490eff939d5ad98f26cdbd44395cc79ffe22753e16c3d9e3b5fff
SSDEEP 1536:sLW5ID3z1yOjXtZqmsGyhvI5jduvd9a8yCl7MbiRVRpz5u:sLWi/LZq3hvUuvd9a8BRpz5u
MD5 SHA1 SHA512 SSDEEP

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KDECO.bat

Path C:\windows \system32\KDECO.bat
Size 11KB
SHA256 a3a80983cb33159f0455fa0135789402558baa1460db94d0071318512b8cb5f9
MD5 c545650595b479c81ad6b9d8882aae39
SHA1 7a98aa2e6eee23b3c1bba876955d525bc618b3f0
SHA512 85ac596a7da9072a28c4178e4fdedc98f1b49c8e3fe5612cfe464833297b13f65d2dc59b52d7fc9970cff8f98d954111229aec0ed9dded454e03b0cf4ebb6ff3
SSDEEP 192:UPNoaJSjPMK2jxkXDmZevmhmpd/mGq5LnRWF7NpL29QeQoGAhLNTbz4UgHCHDQSq:KNjsjUKwxCiZevmgpd/jcnRu7imoG8Le
MD5 SHA1 SHA512 SSDEEP

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memory/740-15-0x00000000613C0000-0x00000000613E3000-memory.dmp

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memory/1380-35-0x0000000000740000-0x0000000000741000-memory.dmp

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memory/1380-0-0x0000000000740000-0x0000000000741000-memory.dmp

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memory/1380-2-0x0000000004070000-0x0000000005070000-memory.dmp

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memory/1380-4-0x0000000000400000-0x0000000000527000-memory.dmp

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memory/1380-1-0x0000000004070000-0x0000000005070000-memory.dmp

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memory/2036-17-0x000001B2B5A50000-0x000001B2B5A72000-memory.dmp

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memory/2036-30-0x000001B2B5AB0000-0x000001B2B5AC0000-memory.dmp

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memory/2036-31-0x000001B2B5AB0000-0x000001B2B5AC0000-memory.dmp

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memory/2036-34-0x00007FFD3DA90000-0x00007FFD3E551000-memory.dmp

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memory/2036-29-0x000001B2B5AB0000-0x000001B2B5AC0000-memory.dmp

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memory/2036-27-0x00007FFD3DA90000-0x00007FFD3E551000-memory.dmp

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memory/2040-45-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/2040-64-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/2040-46-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/2040-47-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/2040-48-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/2040-51-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/2040-52-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/2040-54-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/2040-56-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/2040-42-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/2040-62-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/2040-44-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/2040-65-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/2040-67-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/2040-68-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/2040-69-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/2040-73-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/2040-74-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/2040-81-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/2040-82-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/2040-89-0x00000000006E0000-0x00000000016E0000-memory.dmp

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memory/2040-90-0x00000000006E0000-0x00000000016E0000-memory.dmp

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