modiloader | c53a4d99db52c1fecd0c8c6199992bd143ba7ccddae3626db123cc699cbcb709

Analysis

max time kernel
119s
max time network
120s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
24/09/2024, 16:37

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General

Target

c53a4d99db52c1fecd0c8c6199992bd143ba7ccddae3626db123cc699cbcb709N.exe
Size

90KB
MD5

78a30464282519eb00fa13138c3c2eb0
SHA1

55c7939916ab9cfc480f0b2595ea21464ed2509a
SHA256

c53a4d99db52c1fecd0c8c6199992bd143ba7ccddae3626db123cc699cbcb709
SHA512

d4f4ff3634a11ae3cc78c0a3f8486640e87cea9d6cd252f26bdb9e9d033b1d0c443881e6f249edca4d65eddac9e53be0fbacf7927c480e8c1a3f4c4b9079dff5
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDK:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3Y

Score

10^/10

modiloader discovery persistence trojan upx

Malware Config

Signatures

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

ModiLoader Second Stage 4 IoCs

resource	yara_rule
behavioral2/memory/4292-60-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4292-58-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4292-61-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4292-63-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	c53a4d99db52c1fecd0c8c6199992bd143ba7ccddae3626db123cc699cbcb709N.exe

Executes dropped EXE 3 IoCs

pid	Process
2264	csrsll.exe
4056	csrsll.exe
4292	csrsll.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-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1144 set thread context of 708	1144	c53a4d99db52c1fecd0c8c6199992bd143ba7ccddae3626db123cc699cbcb709N.exe	87
PID 2264 set thread context of 4056	2264	csrsll.exe	96
PID 2264 set thread context of 4292	2264	csrsll.exe	97

UPX packed file 20 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/1144-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1144-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/708-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/708-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/708-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1144-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000300000001e69a-29.dat	upx
behavioral2/memory/2264-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/708-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2264-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2264-44-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4292-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2264-54-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4292-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4292-60-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/708-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4292-58-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4292-61-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4056-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4292-63-0x0000000000400000-0x0000000000414000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 7 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	c53a4d99db52c1fecd0c8c6199992bd143ba7ccddae3626db123cc699cbcb709N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c53a4d99db52c1fecd0c8c6199992bd143ba7ccddae3626db123cc699cbcb709N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe
Token: SeDebugPrivilege	4056	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1144	c53a4d99db52c1fecd0c8c6199992bd143ba7ccddae3626db123cc699cbcb709N.exe
708	c53a4d99db52c1fecd0c8c6199992bd143ba7ccddae3626db123cc699cbcb709N.exe
2264	csrsll.exe
4056	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1144 wrote to memory of 708	1144	c53a4d99db52c1fecd0c8c6199992bd143ba7ccddae3626db123cc699cbcb709N.exe	87
PID 1144 wrote to memory of 708	1144	c53a4d99db52c1fecd0c8c6199992bd143ba7ccddae3626db123cc699cbcb709N.exe	87
PID 1144 wrote to memory of 708	1144	c53a4d99db52c1fecd0c8c6199992bd143ba7ccddae3626db123cc699cbcb709N.exe	87
PID 1144 wrote to memory of 708	1144	c53a4d99db52c1fecd0c8c6199992bd143ba7ccddae3626db123cc699cbcb709N.exe	87
PID 1144 wrote to memory of 708	1144	c53a4d99db52c1fecd0c8c6199992bd143ba7ccddae3626db123cc699cbcb709N.exe	87
PID 1144 wrote to memory of 708	1144	c53a4d99db52c1fecd0c8c6199992bd143ba7ccddae3626db123cc699cbcb709N.exe	87
PID 1144 wrote to memory of 708	1144	c53a4d99db52c1fecd0c8c6199992bd143ba7ccddae3626db123cc699cbcb709N.exe	87
PID 1144 wrote to memory of 708	1144	c53a4d99db52c1fecd0c8c6199992bd143ba7ccddae3626db123cc699cbcb709N.exe	87
PID 708 wrote to memory of 4368	708	c53a4d99db52c1fecd0c8c6199992bd143ba7ccddae3626db123cc699cbcb709N.exe	88
PID 708 wrote to memory of 4368	708	c53a4d99db52c1fecd0c8c6199992bd143ba7ccddae3626db123cc699cbcb709N.exe	88
PID 708 wrote to memory of 4368	708	c53a4d99db52c1fecd0c8c6199992bd143ba7ccddae3626db123cc699cbcb709N.exe	88
PID 4368 wrote to memory of 5100	4368	cmd.exe	91
PID 4368 wrote to memory of 5100	4368	cmd.exe	91
PID 4368 wrote to memory of 5100	4368	cmd.exe	91
PID 708 wrote to memory of 2264	708	c53a4d99db52c1fecd0c8c6199992bd143ba7ccddae3626db123cc699cbcb709N.exe	92
PID 708 wrote to memory of 2264	708	c53a4d99db52c1fecd0c8c6199992bd143ba7ccddae3626db123cc699cbcb709N.exe	92
PID 708 wrote to memory of 2264	708	c53a4d99db52c1fecd0c8c6199992bd143ba7ccddae3626db123cc699cbcb709N.exe	92
PID 2264 wrote to memory of 4056	2264	csrsll.exe	96
PID 2264 wrote to memory of 4056	2264	csrsll.exe	96
PID 2264 wrote to memory of 4056	2264	csrsll.exe	96
PID 2264 wrote to memory of 4056	2264	csrsll.exe	96
PID 2264 wrote to memory of 4056	2264	csrsll.exe	96
PID 2264 wrote to memory of 4056	2264	csrsll.exe	96
PID 2264 wrote to memory of 4056	2264	csrsll.exe	96
PID 2264 wrote to memory of 4056	2264	csrsll.exe	96
PID 2264 wrote to memory of 4292	2264	csrsll.exe	97
PID 2264 wrote to memory of 4292	2264	csrsll.exe	97
PID 2264 wrote to memory of 4292	2264	csrsll.exe	97
PID 2264 wrote to memory of 4292	2264	csrsll.exe	97
PID 2264 wrote to memory of 4292	2264	csrsll.exe	97
PID 2264 wrote to memory of 4292	2264	csrsll.exe	97
PID 2264 wrote to memory of 4292	2264	csrsll.exe	97
PID 2264 wrote to memory of 4292	2264	csrsll.exe	97

C:\Users\Admin\AppData\Local\Temp\c53a4d99db52c1fecd0c8c6199992bd143ba7ccddae3626db123cc699cbcb709N.exe
"C:\Users\Admin\AppData\Local\Temp\c53a4d99db52c1fecd0c8c6199992bd143ba7ccddae3626db123cc699cbcb709N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1144
- C:\Users\Admin\AppData\Local\Temp\c53a4d99db52c1fecd0c8c6199992bd143ba7ccddae3626db123cc699cbcb709N.exe
  "C:\Users\Admin\AppData\Local\Temp\c53a4d99db52c1fecd0c8c6199992bd143ba7ccddae3626db123cc699cbcb709N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:708
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\UYKLI.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4368
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Win Pdf" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe" /f
      4⤵
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      PID:5100
- - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2264
  - - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:4056
  - - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:4292

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\UYKLI.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe

Filesize
90KB

MD5
693c798cb373b0a8dcc5c0e375bc2141

SHA1
c8b24837f59ac4eb6ffe2f305ebe64c36daaf58c

SHA256
8acdecc7adb45b90431a7a3d1304d0939ea651712b358ff876bb5da2479e3a40

SHA512
dfd044790cdf116e04f0eeaf5079c6caf281343b4b3ac108c6474083f49f9b1f807f73c88f5e1baeb2aa4a71970f141956bd148a4f8e78e55d0f251fc143addf

Download Submit
memory/708-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/708-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/708-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/708-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/708-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1144-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1144-5-0x0000000002A40000-0x0000000002A42000-memory.dmp

Filesize
8KB

Download
memory/1144-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1144-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1144-3-0x00000000021D0000-0x00000000021D2000-memory.dmp

Filesize
8KB

Download
memory/1144-6-0x0000000002A50000-0x0000000002A52000-memory.dmp

Filesize
8KB

Download
memory/2264-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2264-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2264-54-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2264-44-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4056-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4292-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4292-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4292-60-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4292-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4292-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4292-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads