modiloader | 59b1fcaee3e525fa1a1a50671f9d4b0f34a63e0085758c504b175707b86b6097

Analysis

max time kernel
120s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
21-01-2025 07:42

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General

Target

59b1fcaee3e525fa1a1a50671f9d4b0f34a63e0085758c504b175707b86b6097.exe
Size

90KB
MD5

0dd88de006792429b3b8f09c34ec9ac7
SHA1

9136a170efdfe605eb8b49050ffa99392af5a2af
SHA256

59b1fcaee3e525fa1a1a50671f9d4b0f34a63e0085758c504b175707b86b6097
SHA512

04df40c481775aa41c35fe405d453dd6138f41fdb2f0e95ee1d6e6f8f7e0d9e30b1d01ee25fcbd2a6e435e41b5341e995ea20ea761e399ae05870d13f14bcbfc
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDV:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3D

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/624-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/624-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/624-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/624-61-0x0000000000400000-0x0000000000414000-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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	59b1fcaee3e525fa1a1a50671f9d4b0f34a63e0085758c504b175707b86b6097.exe

Executes dropped EXE 3 IoCs

pid	Process
4000	csrsll.exe
5044	csrsll.exe
624	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-1-5-21-2437139445-1151884604-3026847218-1000\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 2764 set thread context of 2156	2764	59b1fcaee3e525fa1a1a50671f9d4b0f34a63e0085758c504b175707b86b6097.exe	84
PID 4000 set thread context of 5044	4000	csrsll.exe	102
PID 4000 set thread context of 624	4000	csrsll.exe	103

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2764-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2764-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2156-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2156-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2156-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2764-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0008000000023cc1-29.dat	upx
behavioral2/memory/2156-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4000-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4000-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/624-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/624-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/624-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/624-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4000-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/624-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2156-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5044-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/624-61-0x0000000000400000-0x0000000000414000-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	59b1fcaee3e525fa1a1a50671f9d4b0f34a63e0085758c504b175707b86b6097.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	59b1fcaee3e525fa1a1a50671f9d4b0f34a63e0085758c504b175707b86b6097.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe
Token: SeDebugPrivilege	5044	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2764	59b1fcaee3e525fa1a1a50671f9d4b0f34a63e0085758c504b175707b86b6097.exe
2156	59b1fcaee3e525fa1a1a50671f9d4b0f34a63e0085758c504b175707b86b6097.exe
4000	csrsll.exe
5044	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2764 wrote to memory of 2156	2764	59b1fcaee3e525fa1a1a50671f9d4b0f34a63e0085758c504b175707b86b6097.exe	84
PID 2764 wrote to memory of 2156	2764	59b1fcaee3e525fa1a1a50671f9d4b0f34a63e0085758c504b175707b86b6097.exe	84
PID 2764 wrote to memory of 2156	2764	59b1fcaee3e525fa1a1a50671f9d4b0f34a63e0085758c504b175707b86b6097.exe	84
PID 2764 wrote to memory of 2156	2764	59b1fcaee3e525fa1a1a50671f9d4b0f34a63e0085758c504b175707b86b6097.exe	84
PID 2764 wrote to memory of 2156	2764	59b1fcaee3e525fa1a1a50671f9d4b0f34a63e0085758c504b175707b86b6097.exe	84
PID 2764 wrote to memory of 2156	2764	59b1fcaee3e525fa1a1a50671f9d4b0f34a63e0085758c504b175707b86b6097.exe	84
PID 2764 wrote to memory of 2156	2764	59b1fcaee3e525fa1a1a50671f9d4b0f34a63e0085758c504b175707b86b6097.exe	84
PID 2764 wrote to memory of 2156	2764	59b1fcaee3e525fa1a1a50671f9d4b0f34a63e0085758c504b175707b86b6097.exe	84
PID 2156 wrote to memory of 3840	2156	59b1fcaee3e525fa1a1a50671f9d4b0f34a63e0085758c504b175707b86b6097.exe	87
PID 2156 wrote to memory of 3840	2156	59b1fcaee3e525fa1a1a50671f9d4b0f34a63e0085758c504b175707b86b6097.exe	87
PID 2156 wrote to memory of 3840	2156	59b1fcaee3e525fa1a1a50671f9d4b0f34a63e0085758c504b175707b86b6097.exe	87
PID 3840 wrote to memory of 432	3840	cmd.exe	91
PID 3840 wrote to memory of 432	3840	cmd.exe	91
PID 3840 wrote to memory of 432	3840	cmd.exe	91
PID 2156 wrote to memory of 4000	2156	59b1fcaee3e525fa1a1a50671f9d4b0f34a63e0085758c504b175707b86b6097.exe	92
PID 2156 wrote to memory of 4000	2156	59b1fcaee3e525fa1a1a50671f9d4b0f34a63e0085758c504b175707b86b6097.exe	92
PID 2156 wrote to memory of 4000	2156	59b1fcaee3e525fa1a1a50671f9d4b0f34a63e0085758c504b175707b86b6097.exe	92
PID 4000 wrote to memory of 5044	4000	csrsll.exe	102
PID 4000 wrote to memory of 5044	4000	csrsll.exe	102
PID 4000 wrote to memory of 5044	4000	csrsll.exe	102
PID 4000 wrote to memory of 5044	4000	csrsll.exe	102
PID 4000 wrote to memory of 5044	4000	csrsll.exe	102
PID 4000 wrote to memory of 5044	4000	csrsll.exe	102
PID 4000 wrote to memory of 5044	4000	csrsll.exe	102
PID 4000 wrote to memory of 5044	4000	csrsll.exe	102
PID 4000 wrote to memory of 624	4000	csrsll.exe	103
PID 4000 wrote to memory of 624	4000	csrsll.exe	103
PID 4000 wrote to memory of 624	4000	csrsll.exe	103
PID 4000 wrote to memory of 624	4000	csrsll.exe	103
PID 4000 wrote to memory of 624	4000	csrsll.exe	103
PID 4000 wrote to memory of 624	4000	csrsll.exe	103
PID 4000 wrote to memory of 624	4000	csrsll.exe	103
PID 4000 wrote to memory of 624	4000	csrsll.exe	103

C:\Users\Admin\AppData\Local\Temp\59b1fcaee3e525fa1a1a50671f9d4b0f34a63e0085758c504b175707b86b6097.exe
"C:\Users\Admin\AppData\Local\Temp\59b1fcaee3e525fa1a1a50671f9d4b0f34a63e0085758c504b175707b86b6097.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2764
- C:\Users\Admin\AppData\Local\Temp\59b1fcaee3e525fa1a1a50671f9d4b0f34a63e0085758c504b175707b86b6097.exe
  "C:\Users\Admin\AppData\Local\Temp\59b1fcaee3e525fa1a1a50671f9d4b0f34a63e0085758c504b175707b86b6097.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2156
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\KQVHF.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3840
  - - 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:432
- - 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:4000
  - - 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:5044
  - - 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:624

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\KQVHF.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
6dee5bd13d22af1a1866256fea655b53

SHA1
16a148bda80bc16c6ef1505be077c482b8b80d17

SHA256
99f461dfec165c1cc52213f60ddd9753fc1f2676f502269be1be6b1017e1f28d

SHA512
999c7e5cfdf9debaeb397aa2265d37c9f2d5c7d22e1a41f2928b3b17c4e3f5f4b5ea147dc3e19b124983cda99e77962ea8fb369c83a7344d8e4d395bd27259e6

Download Submit
memory/624-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/624-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/624-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/624-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/624-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/624-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2156-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2156-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2156-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2156-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2156-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2764-4-0x0000000002430000-0x0000000002432000-memory.dmp

Filesize
8KB

Download
memory/2764-3-0x0000000002420000-0x0000000002422000-memory.dmp

Filesize
8KB

Download
memory/2764-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2764-6-0x0000000002450000-0x0000000002452000-memory.dmp

Filesize
8KB

Download
memory/2764-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2764-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4000-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4000-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4000-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5044-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads