modiloader | f59d5995ecaec1ae268cbab0c21e282a5e61adcc8971686d4369f9a86a84b452

Analysis

max time kernel
119s
max time network
119s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
21-12-2024 23:09

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General

Target

f59d5995ecaec1ae268cbab0c21e282a5e61adcc8971686d4369f9a86a84b452.exe
Size

90KB
MD5

3ae424ecb952260eb46df611b5c2443c
SHA1

99b9156bb79417f4e1bbfa7b9d31bf167308478d
SHA256

f59d5995ecaec1ae268cbab0c21e282a5e61adcc8971686d4369f9a86a84b452
SHA512

081c610ded7ab204bd302a7330c6c6dddb8354d380d3a0b265c580689d89d93cd74ad41cd70b2bd60df57e781250ebd719050401a13927c3605ee1b3dba68f73
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDN:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3b

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 family
modiloader

ModiLoader Second Stage 4 IoCs

resource	yara_rule
behavioral2/memory/2432-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2432-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2432-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2432-61-0x0000000000400000-0x0000000000414000-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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	f59d5995ecaec1ae268cbab0c21e282a5e61adcc8971686d4369f9a86a84b452.exe

Executes dropped EXE 3 IoCs

pid	Process
3128	csrsll.exe
432	csrsll.exe
2432	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-1-5-21-3442511616-637977696-3186306149-1000\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 2508 set thread context of 3612	2508	f59d5995ecaec1ae268cbab0c21e282a5e61adcc8971686d4369f9a86a84b452.exe	82
PID 3128 set thread context of 432	3128	csrsll.exe	93
PID 3128 set thread context of 2432	3128	csrsll.exe	94

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2508-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2508-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3612-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3612-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3612-12-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2508-13-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000f000000023bc3-29.dat	upx
behavioral2/memory/3612-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3128-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3128-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2432-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2432-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2432-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2432-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2432-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3128-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3612-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/432-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2432-61-0x0000000000400000-0x0000000000414000-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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f59d5995ecaec1ae268cbab0c21e282a5e61adcc8971686d4369f9a86a84b452.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f59d5995ecaec1ae268cbab0c21e282a5e61adcc8971686d4369f9a86a84b452.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe
Token: SeDebugPrivilege	432	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2508	f59d5995ecaec1ae268cbab0c21e282a5e61adcc8971686d4369f9a86a84b452.exe
3612	f59d5995ecaec1ae268cbab0c21e282a5e61adcc8971686d4369f9a86a84b452.exe
3128	csrsll.exe
432	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2508 wrote to memory of 3612	2508	f59d5995ecaec1ae268cbab0c21e282a5e61adcc8971686d4369f9a86a84b452.exe	82
PID 2508 wrote to memory of 3612	2508	f59d5995ecaec1ae268cbab0c21e282a5e61adcc8971686d4369f9a86a84b452.exe	82
PID 2508 wrote to memory of 3612	2508	f59d5995ecaec1ae268cbab0c21e282a5e61adcc8971686d4369f9a86a84b452.exe	82
PID 2508 wrote to memory of 3612	2508	f59d5995ecaec1ae268cbab0c21e282a5e61adcc8971686d4369f9a86a84b452.exe	82
PID 2508 wrote to memory of 3612	2508	f59d5995ecaec1ae268cbab0c21e282a5e61adcc8971686d4369f9a86a84b452.exe	82
PID 2508 wrote to memory of 3612	2508	f59d5995ecaec1ae268cbab0c21e282a5e61adcc8971686d4369f9a86a84b452.exe	82
PID 2508 wrote to memory of 3612	2508	f59d5995ecaec1ae268cbab0c21e282a5e61adcc8971686d4369f9a86a84b452.exe	82
PID 2508 wrote to memory of 3612	2508	f59d5995ecaec1ae268cbab0c21e282a5e61adcc8971686d4369f9a86a84b452.exe	82
PID 3612 wrote to memory of 2176	3612	f59d5995ecaec1ae268cbab0c21e282a5e61adcc8971686d4369f9a86a84b452.exe	83
PID 3612 wrote to memory of 2176	3612	f59d5995ecaec1ae268cbab0c21e282a5e61adcc8971686d4369f9a86a84b452.exe	83
PID 3612 wrote to memory of 2176	3612	f59d5995ecaec1ae268cbab0c21e282a5e61adcc8971686d4369f9a86a84b452.exe	83
PID 2176 wrote to memory of 1532	2176	cmd.exe	86
PID 2176 wrote to memory of 1532	2176	cmd.exe	86
PID 2176 wrote to memory of 1532	2176	cmd.exe	86
PID 3612 wrote to memory of 3128	3612	f59d5995ecaec1ae268cbab0c21e282a5e61adcc8971686d4369f9a86a84b452.exe	87
PID 3612 wrote to memory of 3128	3612	f59d5995ecaec1ae268cbab0c21e282a5e61adcc8971686d4369f9a86a84b452.exe	87
PID 3612 wrote to memory of 3128	3612	f59d5995ecaec1ae268cbab0c21e282a5e61adcc8971686d4369f9a86a84b452.exe	87
PID 3128 wrote to memory of 432	3128	csrsll.exe	93
PID 3128 wrote to memory of 432	3128	csrsll.exe	93
PID 3128 wrote to memory of 432	3128	csrsll.exe	93
PID 3128 wrote to memory of 432	3128	csrsll.exe	93
PID 3128 wrote to memory of 432	3128	csrsll.exe	93
PID 3128 wrote to memory of 432	3128	csrsll.exe	93
PID 3128 wrote to memory of 432	3128	csrsll.exe	93
PID 3128 wrote to memory of 432	3128	csrsll.exe	93
PID 3128 wrote to memory of 2432	3128	csrsll.exe	94
PID 3128 wrote to memory of 2432	3128	csrsll.exe	94
PID 3128 wrote to memory of 2432	3128	csrsll.exe	94
PID 3128 wrote to memory of 2432	3128	csrsll.exe	94
PID 3128 wrote to memory of 2432	3128	csrsll.exe	94
PID 3128 wrote to memory of 2432	3128	csrsll.exe	94
PID 3128 wrote to memory of 2432	3128	csrsll.exe	94
PID 3128 wrote to memory of 2432	3128	csrsll.exe	94

C:\Users\Admin\AppData\Local\Temp\f59d5995ecaec1ae268cbab0c21e282a5e61adcc8971686d4369f9a86a84b452.exe
"C:\Users\Admin\AppData\Local\Temp\f59d5995ecaec1ae268cbab0c21e282a5e61adcc8971686d4369f9a86a84b452.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2508
- C:\Users\Admin\AppData\Local\Temp\f59d5995ecaec1ae268cbab0c21e282a5e61adcc8971686d4369f9a86a84b452.exe
  "C:\Users\Admin\AppData\Local\Temp\f59d5995ecaec1ae268cbab0c21e282a5e61adcc8971686d4369f9a86a84b452.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3612
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\IWVHP.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2176
  - - 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:1532
- - 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:3128
  - - 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:432
  - - 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:2432

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

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Downloads

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

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
79d7a07256c7e35723e83764336c8494

SHA1
1566476c5380268ee4b71b01da2afcbf96aa95c9

SHA256
17cf9f735119d1420ce1f735f5e7265bd29c102c814fd098b5432374d94e0664

SHA512
9fd9c4f17d6f079be34d76edded5778281cff8499b59eebda29dc798adab60a4555b09b001da604276b3b0ff03958abb5a54f18387b41c0a1f71d77e9791994b

Download Submit
memory/432-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2432-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2432-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2432-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2432-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2432-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2432-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2508-6-0x0000000002A40000-0x0000000002A42000-memory.dmp

Filesize
8KB

Download
memory/2508-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2508-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2508-4-0x0000000002A20000-0x0000000002A22000-memory.dmp

Filesize
8KB

Download
memory/2508-3-0x0000000002A10000-0x0000000002A12000-memory.dmp

Filesize
8KB

Download
memory/2508-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3128-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3128-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3128-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3612-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3612-12-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3612-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/3612-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3612-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3612-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads