modiloader | ac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
07-11-2024 03:06

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General

Target

ac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1.exe
Size

90KB
MD5

97ad2390ab5a5dcf61015ed33f9a1c64
SHA1

59f4a4565161a04e0327ef26876ec329c8392e15
SHA256

ac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1
SHA512

412a3b1c678c10519a36a99eb9c31159607e7d228563f73fe3fc192b3086a5b0bf68b4a365cc0aeb8215453cdef668b1fc88785a6bb49eaaa8cc9ac362635c27
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

Processes:

resource	yara_rule
behavioral2/memory/4836-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4836-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4836-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4836-62-0x0000000000400000-0x0000000000414000-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

Processes:

ac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	ac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1.exe

Executes dropped EXE 3 IoCs

Processes:

csrsll.execsrsll.execsrsll.exe

pid	Process
4140	csrsll.exe
2932	csrsll.exe
4836	csrsll.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

reg.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

ac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1.execsrsll.exe

description	pid	Process	procid_target
PID 4268 set thread context of 4476	4268	ac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1.exe	93
PID 4140 set thread context of 2932	4140	csrsll.exe	103
PID 4140 set thread context of 4836	4140	csrsll.exe	104

UPX packed file 20 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4268-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4268-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4476-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4476-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4268-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4476-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000e000000023c1f-29.dat	upx
behavioral2/memory/4140-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4140-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4476-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4140-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4836-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4836-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4836-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4140-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4836-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4836-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4476-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2932-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4836-62-0x0000000000400000-0x0000000000414000-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

Processes:

cmd.exereg.execsrsll.execsrsll.execsrsll.exeac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1.exeac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1.exe

description	ioc	Process
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	ac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

csrsll.exe

description	pid	Process
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe
Token: SeDebugPrivilege	2932	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

ac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1.exeac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1.execsrsll.execsrsll.exe

pid	Process
4268	ac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1.exe
4476	ac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1.exe
4140	csrsll.exe
2932	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

ac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1.exeac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1.execmd.execsrsll.exe

description	pid	Process	procid_target
PID 4268 wrote to memory of 4476	4268	ac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1.exe	93
PID 4268 wrote to memory of 4476	4268	ac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1.exe	93
PID 4268 wrote to memory of 4476	4268	ac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1.exe	93
PID 4268 wrote to memory of 4476	4268	ac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1.exe	93
PID 4268 wrote to memory of 4476	4268	ac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1.exe	93
PID 4268 wrote to memory of 4476	4268	ac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1.exe	93
PID 4268 wrote to memory of 4476	4268	ac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1.exe	93
PID 4268 wrote to memory of 4476	4268	ac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1.exe	93
PID 4476 wrote to memory of 100	4476	ac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1.exe	94
PID 4476 wrote to memory of 100	4476	ac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1.exe	94
PID 4476 wrote to memory of 100	4476	ac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1.exe	94
PID 100 wrote to memory of 4532	100	cmd.exe	98
PID 100 wrote to memory of 4532	100	cmd.exe	98
PID 100 wrote to memory of 4532	100	cmd.exe	98
PID 4476 wrote to memory of 4140	4476	ac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1.exe	99
PID 4476 wrote to memory of 4140	4476	ac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1.exe	99
PID 4476 wrote to memory of 4140	4476	ac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1.exe	99
PID 4140 wrote to memory of 2932	4140	csrsll.exe	103
PID 4140 wrote to memory of 2932	4140	csrsll.exe	103
PID 4140 wrote to memory of 2932	4140	csrsll.exe	103
PID 4140 wrote to memory of 2932	4140	csrsll.exe	103
PID 4140 wrote to memory of 2932	4140	csrsll.exe	103
PID 4140 wrote to memory of 2932	4140	csrsll.exe	103
PID 4140 wrote to memory of 2932	4140	csrsll.exe	103
PID 4140 wrote to memory of 2932	4140	csrsll.exe	103
PID 4140 wrote to memory of 4836	4140	csrsll.exe	104
PID 4140 wrote to memory of 4836	4140	csrsll.exe	104
PID 4140 wrote to memory of 4836	4140	csrsll.exe	104
PID 4140 wrote to memory of 4836	4140	csrsll.exe	104
PID 4140 wrote to memory of 4836	4140	csrsll.exe	104
PID 4140 wrote to memory of 4836	4140	csrsll.exe	104
PID 4140 wrote to memory of 4836	4140	csrsll.exe	104
PID 4140 wrote to memory of 4836	4140	csrsll.exe	104

C:\Users\Admin\AppData\Local\Temp\ac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1.exe
"C:\Users\Admin\AppData\Local\Temp\ac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4268
- C:\Users\Admin\AppData\Local\Temp\ac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1.exe
  "C:\Users\Admin\AppData\Local\Temp\ac543ed1a2faf53bbcecc478d7b7e1644ab57973940e48d875b99ce6844006f1.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4476
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\JXWIQ.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:100
  - - 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:4532
- - 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:4140
  - - 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:2932
  - - 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:4836

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

Loading Replay Monitor...

Downloads

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

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
1648d0c42c9186d5b55f4917d415fff0

SHA1
744845e5c0d4a5bb29e1865b7d2deb257ce0d36c

SHA256
f59eedfa7c6142861c277944a0f0e305455b12a76101976349aaa2ff36898339

SHA512
338eae20218c5bf9516e9f317dcca91f311443b8b79a8fb157ba575f78432dbdc7b38367de572d00798f61c899a3f7709c87fe69e3265baa2f04dac2ebd1d6f7

Download Submit
memory/2932-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4140-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4140-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4140-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4140-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4268-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4268-6-0x0000000002B90000-0x0000000002B92000-memory.dmp

Filesize
8KB

Download
memory/4268-4-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/4268-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4268-3-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/4268-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4476-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/4476-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4476-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4476-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4476-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4476-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4836-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4836-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4836-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4836-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4836-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4836-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download