modiloader | 58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa

General

Target

58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe
Size

90KB
MD5

7635c23838f82efad04d629ea8dec6b8
SHA1

349a49d0d2522fcc1c901a014075f2b0e354a6cb
SHA256

58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa
SHA512

53b71780b7d2a9e01a79d8e2b24c433c7394fdd186778b9d29f1771cf0dd51d19909e49a6dff3dedfd84876d9830641ddaaa4e6f71853ac3d3e2bc80159a0e0c
SSDEEP

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

Score

10^/10

modiloader persistence trojan upx

Malware Config

Signatures

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

Detects Windows executables referencing non-Windows User-Agents 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4836-48-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/memory/4836-51-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/memory/4836-50-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/memory/4836-59-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

ModiLoader Second Stage 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4836-48-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4836-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4836-50-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4836-59-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

UPX dump on OEP (original entry point) 16 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3148-0-0x0000000000400000-0x0000000000453000-memory.dmp	UPX
behavioral2/memory/4576-6-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/4576-8-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/4576-12-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/3148-10-0x0000000000400000-0x0000000000453000-memory.dmp	UPX
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe	UPX
behavioral2/memory/1684-36-0x0000000000400000-0x0000000000453000-memory.dmp	UPX
behavioral2/memory/4836-41-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/4836-48-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/4836-51-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/4836-50-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/4836-46-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/1684-49-0x0000000000400000-0x0000000000453000-memory.dmp	UPX
behavioral2/memory/4576-57-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/1492-58-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/4836-59-0x0000000000400000-0x0000000000414000-memory.dmp	UPX

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:

58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe

Executes dropped EXE 3 IoCs

Processes:

csrsll.execsrsll.execsrsll.exe

pid process

1684 csrsll.exe
1492 csrsll.exe
4836 csrsll.exe

pid	process
1684	csrsll.exe
1492	csrsll.exe
4836	csrsll.exe

UPX packed file 16 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/3148-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4576-6-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4576-8-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4576-12-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3148-10-0x0000000000400000-0x0000000000453000-memory.dmp	upx
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe	upx
behavioral2/memory/1684-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4836-41-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4836-48-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4836-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4836-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4836-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1684-49-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4576-57-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1492-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4836-59-0x0000000000400000-0x0000000000414000-memory.dmp	upx

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-1-5-21-3906287020-2915474608-1755617787-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.execsrsll.exe

description	pid	process	target process
PID 3148 set thread context of 4576	3148	58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe	58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe
PID 1684 set thread context of 1492	1684	csrsll.exe	csrsll.exe
PID 1684 set thread context of 4836	1684	csrsll.exe	csrsll.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

csrsll.exe

description	pid	process
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe
Token: SeDebugPrivilege	1492	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.execsrsll.execsrsll.exe

pid	process
3148	58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe
4576	58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe
1684	csrsll.exe
1492	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.execmd.execsrsll.exe

description	pid	process	target process
PID 3148 wrote to memory of 4576	3148	58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe	58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe
PID 3148 wrote to memory of 4576	3148	58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe	58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe
PID 3148 wrote to memory of 4576	3148	58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe	58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe
PID 3148 wrote to memory of 4576	3148	58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe	58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe
PID 3148 wrote to memory of 4576	3148	58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe	58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe
PID 3148 wrote to memory of 4576	3148	58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe	58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe
PID 3148 wrote to memory of 4576	3148	58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe	58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe
PID 3148 wrote to memory of 4576	3148	58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe	58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe
PID 4576 wrote to memory of 2384	4576	58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe	cmd.exe
PID 4576 wrote to memory of 2384	4576	58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe	cmd.exe
PID 4576 wrote to memory of 2384	4576	58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe	cmd.exe
PID 2384 wrote to memory of 4728	2384	cmd.exe	reg.exe
PID 2384 wrote to memory of 4728	2384	cmd.exe	reg.exe
PID 2384 wrote to memory of 4728	2384	cmd.exe	reg.exe
PID 4576 wrote to memory of 1684	4576	58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe	csrsll.exe
PID 4576 wrote to memory of 1684	4576	58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe	csrsll.exe
PID 4576 wrote to memory of 1684	4576	58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe	csrsll.exe
PID 1684 wrote to memory of 1492	1684	csrsll.exe	csrsll.exe
PID 1684 wrote to memory of 1492	1684	csrsll.exe	csrsll.exe
PID 1684 wrote to memory of 1492	1684	csrsll.exe	csrsll.exe
PID 1684 wrote to memory of 1492	1684	csrsll.exe	csrsll.exe
PID 1684 wrote to memory of 1492	1684	csrsll.exe	csrsll.exe
PID 1684 wrote to memory of 1492	1684	csrsll.exe	csrsll.exe
PID 1684 wrote to memory of 1492	1684	csrsll.exe	csrsll.exe
PID 1684 wrote to memory of 1492	1684	csrsll.exe	csrsll.exe
PID 1684 wrote to memory of 4836	1684	csrsll.exe	csrsll.exe
PID 1684 wrote to memory of 4836	1684	csrsll.exe	csrsll.exe
PID 1684 wrote to memory of 4836	1684	csrsll.exe	csrsll.exe
PID 1684 wrote to memory of 4836	1684	csrsll.exe	csrsll.exe
PID 1684 wrote to memory of 4836	1684	csrsll.exe	csrsll.exe
PID 1684 wrote to memory of 4836	1684	csrsll.exe	csrsll.exe
PID 1684 wrote to memory of 4836	1684	csrsll.exe	csrsll.exe
PID 1684 wrote to memory of 4836	1684	csrsll.exe	csrsll.exe

C:\Users\Admin\AppData\Local\Temp\58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe
"C:\Users\Admin\AppData\Local\Temp\58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3148

C:\Users\Admin\AppData\Local\Temp\58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe
"C:\Users\Admin\AppData\Local\Temp\58aedb4314582084caf0e716936400482c50e0837b77672c563fc9d9531150aa.exe"
2⤵
- Checks computer location settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4576

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\QUPXM.bat" "
3⤵
- Suspicious use of WriteProcessMemory
PID:2384

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
PID:4728

C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1684

C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
4⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1492

C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
4⤵
- Executes dropped EXE
PID:4836

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\QUPXM.txt
Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
Filesize
90KB

MD5
1634c7e1ffe899c961f28c8a909c9a5b

SHA1
fee183bd63f36f2e86d1abf81f7fda46ffe6f4a2

SHA256
87e40b21e719064ffa055bbba8568ff5ae7b995b227273e29b1430466a61fc96

SHA512
f84304d33c4519de33040d587eb82667bbb526f19357c1a49f54d15baec6013eb366ae7055f6c80532244ff73d465f42e10a33dd9caab5a5b0c9db7cc5a99efd

Download Submit
memory/1492-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1684-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1684-49-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3148-3-0x00000000021B0000-0x00000000021B2000-memory.dmp

Filesize
8KB

Download
memory/3148-5-0x00000000021D0000-0x00000000021D2000-memory.dmp

Filesize
8KB

Download
memory/3148-4-0x00000000021C0000-0x00000000021C2000-memory.dmp

Filesize
8KB

Download
memory/3148-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3148-10-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4576-8-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4576-12-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4576-57-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4576-6-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4836-41-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4836-48-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

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

Filesize
80KB

Download
memory/4836-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4836-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4836-59-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads