modiloader | 31a7e70deb8af07d7b76b5dea8cbf90ec63bea24bffdd5ebac6f223c02f55753

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
15/08/2024, 01:10

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General

Target
31a7e70deb8af07d7b76b5dea8cbf90ec63bea24bffdd5ebac6f223c02f55753.exe
Size 1.2MB
Sample240815-bjef2a1fqj
SHA256 31a7e70deb8af07d7b76b5dea8cbf90ec63bea24bffdd5ebac6f223c02f55753
MD5 d70fa5471771d18888f0861ac060a914
SHA1 83ef28ef9e4850629433f497fd0360120449e297
SHA512 af89922e5a24a12522603e4a034b2e1aef911d5cf6399de426aa95b971dcf70513a99f45033895939f0475d7b001054717c9b0d38278ff45ee2b41376f3da31b
SSDEEP 24576:UMa3J1TbjIuI1OHXTXYYPajiFGoI3ajHucOWVQy/vrAFGSi29kQXY1Max2AnE:UMk27eayHaAnE
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

modiloader discovery 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 1 IoCs

resource	yara_rule
behavioral2/memory/720-2-0x0000000002A00000-0x0000000003A00000-memory.dmp	modiloader_stage2

Executes dropped EXE 9 IoCs

pid	Process
3104	alpha.pif
3040	alpha.pif
1616	alpha.pif
4340	xpha.pif
2640	per.exe
1884	pha.pif
2716	alpha.pif
4732	alpha.pif
4912	alpha.pif

Loads dropped DLL 1 IoCs

pid	Process
2640	per.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-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Wclbjzkj = "C:\\Users\\Public\\Wclbjzkj.url"	31a7e70deb8af07d7b76b5dea8cbf90ec63bea24bffdd5ebac6f223c02f55753.exe

System Location Discovery: System Language Discovery 1 TTPs 10 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	alpha.pif
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	alpha.pif
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	alpha.pif
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	31a7e70deb8af07d7b76b5dea8cbf90ec63bea24bffdd5ebac6f223c02f55753.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	alpha.pif
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xpha.pif
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	alpha.pif
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	alpha.pif
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SndVol.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
3384	esentutl.exe

Script User-Agent 1 IoCs

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

description	flow	ioc
HTTP User-Agent header	28	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1884	pha.pif
1884	pha.pif
720	31a7e70deb8af07d7b76b5dea8cbf90ec63bea24bffdd5ebac6f223c02f55753.exe
720	31a7e70deb8af07d7b76b5dea8cbf90ec63bea24bffdd5ebac6f223c02f55753.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1884	pha.pif

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4720	SndVol.exe

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
4720	SndVol.exe
4720	SndVol.exe

Suspicious use of WriteProcessMemory 43 IoCs

description	pid	Process	procid_target
PID 720 wrote to memory of 5056	720	31a7e70deb8af07d7b76b5dea8cbf90ec63bea24bffdd5ebac6f223c02f55753.exe	92
PID 720 wrote to memory of 5056	720	31a7e70deb8af07d7b76b5dea8cbf90ec63bea24bffdd5ebac6f223c02f55753.exe	92
PID 720 wrote to memory of 5056	720	31a7e70deb8af07d7b76b5dea8cbf90ec63bea24bffdd5ebac6f223c02f55753.exe	92
PID 5056 wrote to memory of 884	5056	cmd.exe	94
PID 5056 wrote to memory of 884	5056	cmd.exe	94
PID 5056 wrote to memory of 884	5056	cmd.exe	94
PID 5056 wrote to memory of 3384	5056	cmd.exe	95
PID 5056 wrote to memory of 3384	5056	cmd.exe	95
PID 5056 wrote to memory of 3384	5056	cmd.exe	95
PID 5056 wrote to memory of 3104	5056	cmd.exe	96
PID 5056 wrote to memory of 3104	5056	cmd.exe	96
PID 5056 wrote to memory of 3104	5056	cmd.exe	96
PID 5056 wrote to memory of 3040	5056	cmd.exe	97
PID 5056 wrote to memory of 3040	5056	cmd.exe	97
PID 5056 wrote to memory of 3040	5056	cmd.exe	97
PID 5056 wrote to memory of 1616	5056	cmd.exe	98
PID 5056 wrote to memory of 1616	5056	cmd.exe	98
PID 5056 wrote to memory of 1616	5056	cmd.exe	98
PID 1616 wrote to memory of 4340	1616	alpha.pif	99
PID 1616 wrote to memory of 4340	1616	alpha.pif	99
PID 1616 wrote to memory of 4340	1616	alpha.pif	99
PID 5056 wrote to memory of 2640	5056	cmd.exe	102
PID 5056 wrote to memory of 2640	5056	cmd.exe	102
PID 2640 wrote to memory of 2960	2640	per.exe	103
PID 2640 wrote to memory of 2960	2640	per.exe	103
PID 2640 wrote to memory of 1884	2640	per.exe	105
PID 2640 wrote to memory of 1884	2640	per.exe	105
PID 5056 wrote to memory of 2716	5056	cmd.exe	107
PID 5056 wrote to memory of 2716	5056	cmd.exe	107
PID 5056 wrote to memory of 2716	5056	cmd.exe	107
PID 5056 wrote to memory of 4732	5056	cmd.exe	108
PID 5056 wrote to memory of 4732	5056	cmd.exe	108
PID 5056 wrote to memory of 4732	5056	cmd.exe	108
PID 5056 wrote to memory of 4912	5056	cmd.exe	109
PID 5056 wrote to memory of 4912	5056	cmd.exe	109
PID 5056 wrote to memory of 4912	5056	cmd.exe	109
PID 720 wrote to memory of 2800	720	31a7e70deb8af07d7b76b5dea8cbf90ec63bea24bffdd5ebac6f223c02f55753.exe	112
PID 720 wrote to memory of 2800	720	31a7e70deb8af07d7b76b5dea8cbf90ec63bea24bffdd5ebac6f223c02f55753.exe	112
PID 720 wrote to memory of 2800	720	31a7e70deb8af07d7b76b5dea8cbf90ec63bea24bffdd5ebac6f223c02f55753.exe	112
PID 720 wrote to memory of 4720	720	31a7e70deb8af07d7b76b5dea8cbf90ec63bea24bffdd5ebac6f223c02f55753.exe	114
PID 720 wrote to memory of 4720	720	31a7e70deb8af07d7b76b5dea8cbf90ec63bea24bffdd5ebac6f223c02f55753.exe	114
PID 720 wrote to memory of 4720	720	31a7e70deb8af07d7b76b5dea8cbf90ec63bea24bffdd5ebac6f223c02f55753.exe	114
PID 720 wrote to memory of 4720	720	31a7e70deb8af07d7b76b5dea8cbf90ec63bea24bffdd5ebac6f223c02f55753.exe	114

C:\Users\Admin\AppData\Local\Temp\31a7e70deb8af07d7b76b5dea8cbf90ec63bea24bffdd5ebac6f223c02f55753.exe
"C:\Users\Admin\AppData\Local\Temp\31a7e70deb8af07d7b76b5dea8cbf90ec63bea24bffdd5ebac6f223c02f55753.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:720
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Public\Libraries\jkzjblcW.cmd" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5056
- - C:\Windows\SysWOW64\esentutl.exe
    C:\\Windows\\System32\\esentutl /y C:\\Windows\\System32\\cmd.exe /d C:\\Users\\Public\\alpha.pif /o
    3⤵
    PID:884
- - C:\Windows\SysWOW64\esentutl.exe
    C:\\Windows\\System32\\esentutl /y C:\\Windows\\System32\\ping.exe /d C:\\Users\\Public\\xpha.pif /o
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    PID:3384
- - C:\Users\Public\alpha.pif
    C:\\Users\\Public\\alpha.pif /c mkdir "\\?\C:\Windows "
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3104
- - C:\Users\Public\alpha.pif
    C:\\Users\\Public\\alpha.pif /c mkdir "\\?\C:\Windows \SysWOW64"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3040
- - C:\Users\Public\alpha.pif
    C:\\Users\\Public\\alpha.pif /c C:\\Users\\Public\\xpha.pif 127.0.0.1 -n 10
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1616
  - - C:\Users\Public\xpha.pif
      C:\\Users\\Public\\xpha.pif 127.0.0.1 -n 10
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:4340
- - C:\Windows \SysWOW64\per.exe
    "C:\\Windows \\SysWOW64\\per.exe
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of WriteProcessMemory
    PID:2640
  - - C:\Windows\SYSTEM32\esentutl.exe
      esentutl /y C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\powershell.exe /d C:\\Users\\Public\\pha.pif /o
      4⤵
      PID:2960
  - - C:\Users\Public\pha.pif
      C:\\Users\\Public\\pha.pif -WindowStyle hidden -Command Add-MpPreference -ExclusionExtension '.exe','bat','.pif'
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1884
- - C:\Users\Public\alpha.pif
    C:\\Users\\Public\\alpha.pif /c del "C:\Users\Public\xpha.pif"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2716
- - C:\Users\Public\alpha.pif
    C:\\Users\\Public\\alpha.pif /c rmdir "C:\Windows \SysWOW64
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4732
- - C:\Users\Public\alpha.pif
    C:\\Users\\Public\\alpha.pif /c rmdir "C:\Windows \"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4912
- C:\Windows\SysWOW64\esentutl.exe
  C:\\Windows\\System32\\esentutl.exe /y C:\Users\Admin\AppData\Local\Temp\31a7e70deb8af07d7b76b5dea8cbf90ec63bea24bffdd5ebac6f223c02f55753.exe /d C:\\Users\\Public\\Libraries\\Wclbjzkj.PIF /o
  2⤵
  PID:2800
- C:\Windows\SysWOW64\SndVol.exe
  C:\Windows\System32\SndVol.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:4720

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

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

logs.dat

Path C:\ProgramData\remcos\logs.dat
Size 222B
SHA256 0267c2c71706ac21e5ca860a40bdf2aad1d526bea4c29460b577bb742c17791a
MD5 a3f63dec3c071ac203a69d21eebe27ce
SHA1 21620a91adb4dd08b99c59e426fe1b8214e97c4f
SHA512 b8e225b5a529d0e050d4c87dc05102921c74b918faeb40c04d41503c4fea0ecd193bd92e26c273b29bfc279650b0d0ef17b324ad63acb55001c9dfdc78c27d6b
MD5 SHA1 SHA512

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__PSScriptPolicyTest_txvbhzpm.jjg.ps1

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

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jkzjblcW.cmd

Path C:\Users\Public\Libraries\jkzjblcW.cmd
Size 60KB
SHA256 d08ccc9b1e3acc205fe754bad8416964e9711815e9ceed5e6af73d8e9035ec9e
MD5 b87f096cbc25570329e2bb59fee57580
SHA1 d281d1bf37b4fb46f90973afc65eece3908532b2
SHA512 72901adde38f50cf6d74743c0a546c0fea8b1cd4a18449048a0758a7593a176fc33aad1ebfd955775eefc2b30532bcc18e4f2964b3731b668dd87d94405951f7
SSDEEP 768:KwVRHlxGSbE0l9swi54HlMhhAKHwT6yQZPtQdtyWNd/Ozc:LbeSI0l9swahhhtwT6VytHNdGzc
MD5 SHA1 SHA512 SSDEEP

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alpha.pif

Path C:\Users\Public\alpha.pif
Size 231KB
SHA256 4d89fc34d5f0f9babd022271c585a9477bf41e834e46b991deaa0530fdb25e22
MD5 d0fce3afa6aa1d58ce9fa336cc2b675b
SHA1 4048488de6ba4bfef9edf103755519f1f762668f
SHA512 80e127ef81752cd50f9ea2d662dc4d3bf8db8d29680e75fa5fc406ca22cafa5c4d89ef2eac65b486413d3cdd57a2c12a1cb75f65d1e312a717d262265736d1c2
SSDEEP 6144:i4VU52dn+OAdUV0RzCcXkThYrK9qqUtmtime:i4K2B+Ob2h0NXIn
MD5 SHA1 SHA512 SSDEEP

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pha.pif

Path C:\Users\Public\pha.pif
Size 442KB
SHA256 9f914d42706fe215501044acd85a32d58aaef1419d404fddfa5d3b48f66ccd9f
MD5 04029e121a0cfa5991749937dd22a1d9
SHA1 f43d9bb316e30ae1a3494ac5b0624f6bea1bf054
SHA512 6a2fb055473033fd8fdb8868823442875b5b60c115031aaeda688a35a092f6278e8687e2ae2b8dc097f8f3f35d23959757bf0c408274a2ef5f40ddfa4b5c851b
SSDEEP 6144:r2fdXxswSX0z/YWwO9sV1yZywi/PzNKXzJ7BapCK5d3klRzULOnWyjLsPhAQzqO:qVXqXEgW2KXzJ4pdd3klnnWosPhnzq
MD5 SHA1 SHA512 SSDEEP

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xpha.pif

Path C:\Users\Public\xpha.pif
Size 18KB
SHA256 4aaa74f294c15aeb37ada8185d0dead58bd87276a01a814abc0c4b40545bf2ef
MD5 b3624dd758ccecf93a1226cef252ca12
SHA1 fcf4dad8c4ad101504b1bf47cbbddbac36b558a7
SHA512 c613d18511b00fa25fc7b1bdde10d96debb42a99b5aaab9e9826538d0e229085bb371f0197f6b1086c4f9c605f01e71287ffc5442f701a95d67c232a5f031838
SSDEEP 384:PVhNH/TqNcx+5tTAjtn3bPcPwoeGULZbiWBlWjVw:PVhZXx+5tTetLVohULZJgw
MD5 SHA1 SHA512 SSDEEP

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NETUTILS.dll

Path C:\Windows \SysWOW64\NETUTILS.dll
Size 115KB
SHA256 3fa23d8f7b7eeac6443e107bd70d0c6371afc1f8082d3d58fffd8685cf9e2193
MD5 c5db31551cb21105e3f0b3e467b91cc7
SHA1 c66fd7732973d9803ba0fd4323e8507876892310
SHA512 6d1ee4b55fb74dc093f52caf1e093ec2742af263ff8fa264cd61eea48c021c3438150ba12a8e9d694e7246fe296ea011d8b6313e8ee4476a63c7072c2990685e
SSDEEP 1536:zhOA2MID3zFywXtv1msyRWBg5jecKP7EYACl7MbiReR5vDP+:zhF2//5v18WBXcKP7EYMR5vDP+
MD5 SHA1 SHA512 SSDEEP

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per.exe

Path C:\Windows \SysWOW64\per.exe
Size 94KB
SHA256 0db4d3ffdb96d13cf3b427af8be66d985728c55ae254e4b67d287797e4c0b323
MD5 869640d0a3f838694ab4dfea9e2f544d
SHA1 bdc42b280446ba53624ff23f314aadb861566832
SHA512 6e775cfb350415434b18427d5ff79b930ed3b0b3fc3466bc195a796c95661d4696f2d662dd0e020c3a6c3419c2734468b1d7546712ecec868d2bbfd2bc2468a7
SSDEEP 1536:dhJfbGY/Bn623Kvv0IzGJyyu2xXibswbTYTjULf1YrfspZPgpzF:dhJfbG6B6yKvv0uWyyu2xXibswbQjUjs
MD5 SHA1 SHA512 SSDEEP

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memory/720-4-0x0000000000400000-0x0000000000540000-memory.dmp

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memory/720-0-0x0000000000730000-0x0000000000731000-memory.dmp

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memory/720-2-0x0000000002A00000-0x0000000003A00000-memory.dmp

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memory/720-1-0x0000000002A00000-0x0000000003A00000-memory.dmp

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memory/884-34-0x0000000001220000-0x0000000001230000-memory.dmp

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memory/884-11-0x0000000000E40000-0x0000000000E50000-memory.dmp

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memory/1884-133-0x0000017C53C50000-0x0000017C53C72000-memory.dmp

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