modiloader | a985c8b9d1a5abeb4a37f6f869842ff48d9b76367049be51990acdc7305d7053

Analysis

max time kernel
120s
max time network
122s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04-11-2024 08:50

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General

Target

a985c8b9d1a5abeb4a37f6f869842ff48d9b76367049be51990acdc7305d7053N.exe
Size

90KB
MD5

83333beda7d1962e1472b708f3766f10
SHA1

d6fc9a0f5bd6423861c2e7a3c8294ebe6e897780
SHA256

a985c8b9d1a5abeb4a37f6f869842ff48d9b76367049be51990acdc7305d7053
SHA512

cdbdcda4e77dbc765eb047e7ec00817d7c9044346140432e46029f373a1dac5f5532dc461c69cfaf9ee9a4b764a0ce76710a86cc91d797a62b129d927c0fa92a
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 family
modiloader

ModiLoader Second Stage 4 IoCs

resource	yara_rule
behavioral2/memory/4480-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4480-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4480-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4480-62-0x0000000000400000-0x0000000000414000-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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	a985c8b9d1a5abeb4a37f6f869842ff48d9b76367049be51990acdc7305d7053N.exe

Executes dropped EXE 3 IoCs

pid	Process
4928	csrsll.exe
2400	csrsll.exe
4480	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-1-5-21-3756129449-3121373848-4276368241-1000\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 4132 set thread context of 4280	4132	a985c8b9d1a5abeb4a37f6f869842ff48d9b76367049be51990acdc7305d7053N.exe	92
PID 4928 set thread context of 2400	4928	csrsll.exe	100
PID 4928 set thread context of 4480	4928	csrsll.exe	101

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4132-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4132-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4280-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4280-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4132-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4280-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0009000000023bd3-28.dat	upx
behavioral2/memory/4928-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4280-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4928-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4928-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4480-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4480-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4480-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4480-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4480-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4928-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4280-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2400-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4480-62-0x0000000000400000-0x0000000000414000-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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a985c8b9d1a5abeb4a37f6f869842ff48d9b76367049be51990acdc7305d7053N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a985c8b9d1a5abeb4a37f6f869842ff48d9b76367049be51990acdc7305d7053N.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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe
Token: SeDebugPrivilege	2400	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4132	a985c8b9d1a5abeb4a37f6f869842ff48d9b76367049be51990acdc7305d7053N.exe
4280	a985c8b9d1a5abeb4a37f6f869842ff48d9b76367049be51990acdc7305d7053N.exe
4928	csrsll.exe
2400	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4132 wrote to memory of 4280	4132	a985c8b9d1a5abeb4a37f6f869842ff48d9b76367049be51990acdc7305d7053N.exe	92
PID 4132 wrote to memory of 4280	4132	a985c8b9d1a5abeb4a37f6f869842ff48d9b76367049be51990acdc7305d7053N.exe	92
PID 4132 wrote to memory of 4280	4132	a985c8b9d1a5abeb4a37f6f869842ff48d9b76367049be51990acdc7305d7053N.exe	92
PID 4132 wrote to memory of 4280	4132	a985c8b9d1a5abeb4a37f6f869842ff48d9b76367049be51990acdc7305d7053N.exe	92
PID 4132 wrote to memory of 4280	4132	a985c8b9d1a5abeb4a37f6f869842ff48d9b76367049be51990acdc7305d7053N.exe	92
PID 4132 wrote to memory of 4280	4132	a985c8b9d1a5abeb4a37f6f869842ff48d9b76367049be51990acdc7305d7053N.exe	92
PID 4132 wrote to memory of 4280	4132	a985c8b9d1a5abeb4a37f6f869842ff48d9b76367049be51990acdc7305d7053N.exe	92
PID 4132 wrote to memory of 4280	4132	a985c8b9d1a5abeb4a37f6f869842ff48d9b76367049be51990acdc7305d7053N.exe	92
PID 4280 wrote to memory of 5036	4280	a985c8b9d1a5abeb4a37f6f869842ff48d9b76367049be51990acdc7305d7053N.exe	95
PID 4280 wrote to memory of 5036	4280	a985c8b9d1a5abeb4a37f6f869842ff48d9b76367049be51990acdc7305d7053N.exe	95
PID 4280 wrote to memory of 5036	4280	a985c8b9d1a5abeb4a37f6f869842ff48d9b76367049be51990acdc7305d7053N.exe	95
PID 5036 wrote to memory of 1116	5036	cmd.exe	98
PID 5036 wrote to memory of 1116	5036	cmd.exe	98
PID 5036 wrote to memory of 1116	5036	cmd.exe	98
PID 4280 wrote to memory of 4928	4280	a985c8b9d1a5abeb4a37f6f869842ff48d9b76367049be51990acdc7305d7053N.exe	99
PID 4280 wrote to memory of 4928	4280	a985c8b9d1a5abeb4a37f6f869842ff48d9b76367049be51990acdc7305d7053N.exe	99
PID 4280 wrote to memory of 4928	4280	a985c8b9d1a5abeb4a37f6f869842ff48d9b76367049be51990acdc7305d7053N.exe	99
PID 4928 wrote to memory of 2400	4928	csrsll.exe	100
PID 4928 wrote to memory of 2400	4928	csrsll.exe	100
PID 4928 wrote to memory of 2400	4928	csrsll.exe	100
PID 4928 wrote to memory of 2400	4928	csrsll.exe	100
PID 4928 wrote to memory of 2400	4928	csrsll.exe	100
PID 4928 wrote to memory of 2400	4928	csrsll.exe	100
PID 4928 wrote to memory of 2400	4928	csrsll.exe	100
PID 4928 wrote to memory of 2400	4928	csrsll.exe	100
PID 4928 wrote to memory of 4480	4928	csrsll.exe	101
PID 4928 wrote to memory of 4480	4928	csrsll.exe	101
PID 4928 wrote to memory of 4480	4928	csrsll.exe	101
PID 4928 wrote to memory of 4480	4928	csrsll.exe	101
PID 4928 wrote to memory of 4480	4928	csrsll.exe	101
PID 4928 wrote to memory of 4480	4928	csrsll.exe	101
PID 4928 wrote to memory of 4480	4928	csrsll.exe	101
PID 4928 wrote to memory of 4480	4928	csrsll.exe	101

C:\Users\Admin\AppData\Local\Temp\a985c8b9d1a5abeb4a37f6f869842ff48d9b76367049be51990acdc7305d7053N.exe
"C:\Users\Admin\AppData\Local\Temp\a985c8b9d1a5abeb4a37f6f869842ff48d9b76367049be51990acdc7305d7053N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4132
- C:\Users\Admin\AppData\Local\Temp\a985c8b9d1a5abeb4a37f6f869842ff48d9b76367049be51990acdc7305d7053N.exe
  "C:\Users\Admin\AppData\Local\Temp\a985c8b9d1a5abeb4a37f6f869842ff48d9b76367049be51990acdc7305d7053N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4280
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\RNBNW.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:5036
  - - 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:1116
- - 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:4928
  - - 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:2400
  - - 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:4480

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\RNBNW.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
6b2e0ff10a775a6ba87d99b88ee74136

SHA1
8fb5ade100d1c635dbaf261f3ba6b28c75538b4e

SHA256
b68adf3004fc9f68e9307bfff1b767098c4b4639bc56b50f1c19dabbf40e6bae

SHA512
9c3b87a07ffb62eb2b711ad4b89c2c7fe5d0db354a3cf047f075e55f6c557bfe8e34c574d54cd09aace7349b892ace88426a3d56a745c240badf7d60fd7c2891

Download Submit
memory/2400-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4132-3-0x0000000002A10000-0x0000000002A12000-memory.dmp

Filesize
8KB

Download
memory/4132-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4132-6-0x0000000002A50000-0x0000000002A52000-memory.dmp

Filesize
8KB

Download
memory/4132-5-0x0000000002A40000-0x0000000002A42000-memory.dmp

Filesize
8KB

Download
memory/4132-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4132-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4280-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4280-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4280-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4280-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4280-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4480-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4480-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4480-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4480-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4480-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4480-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4928-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4928-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4928-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4928-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads