modiloader | b1a4423932b42fbe7f939599bdc4b8efda756a914d2cdceba2d991c533affdf3

General

Target

b1a4423932b42fbe7f939599bdc4b8efda756a914d2cdceba2d991c533affdf3.exe
Size

110KB
MD5

4fccf442a517578100107113600c0e5f
SHA1

edd14b670a0d1cefbc78c77c24b4d2310c974f30
SHA256

b1a4423932b42fbe7f939599bdc4b8efda756a914d2cdceba2d991c533affdf3
SHA512

7e289c03dd40e9864919553ea6f97afed490188380e24390fbee8bba95d3c833c443bc5c5416894052308ff5f3dd0e229d90799ea69f489048ba8d492c85355a
SSDEEP

1536:SVuNAXTj4Fj/91/NnLZqeWEPVpa8DzePjkgcwYS7S5+Vfk09+2W8zKcTcVtnouy8:woy8j7VnNdrPHaSekwi+mW+2PdTGout

Score

10^/10

modiloader evasion persistence trojan upx

Malware Config

Signatures

ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
trojan modiloader
UAC bypass 3 TTPs 1 IoCs
evasion trojan

Bypass User Account Control
T1088

Disabling Security Tools
T1089

Modify Registry
T1112

Processes:

mstwain32.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" mstwain32.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	mstwain32.exe

ModiLoader Second Stage 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/400-132-0x0000000000400000-0x000000000044F000-memory.dmp	modiloader_stage2
behavioral2/memory/400-133-0x0000000000400000-0x000000000044F000-memory.dmp	modiloader_stage2
behavioral2/memory/400-137-0x0000000000400000-0x000000000044F000-memory.dmp	modiloader_stage2
behavioral2/memory/4344-140-0x0000000000400000-0x000000000044F000-memory.dmp	modiloader_stage2
behavioral2/memory/4344-144-0x0000000000400000-0x000000000044F000-memory.dmp	modiloader_stage2

Executes dropped EXE 1 IoCs

Processes:

mstwain32.exe

pid process

4344 mstwain32.exe

pid	process
4344	mstwain32.exe

UPX packed file 7 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/400-132-0x0000000000400000-0x000000000044F000-memory.dmp	upx
behavioral2/memory/400-133-0x0000000000400000-0x000000000044F000-memory.dmp	upx
C:\Windows\mstwain32.exe	upx
C:\Windows\mstwain32.exe	upx
behavioral2/memory/400-137-0x0000000000400000-0x000000000044F000-memory.dmp	upx
behavioral2/memory/4344-140-0x0000000000400000-0x000000000044F000-memory.dmp	upx
behavioral2/memory/4344-144-0x0000000000400000-0x000000000044F000-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:

b1a4423932b42fbe7f939599bdc4b8efda756a914d2cdceba2d991c533affdf3.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	b1a4423932b42fbe7f939599bdc4b8efda756a914d2cdceba2d991c533affdf3.exe

Loads dropped DLL 4 IoCs

Processes:

mstwain32.exe

pid process

4344 mstwain32.exe
4344 mstwain32.exe
4344 mstwain32.exe
4344 mstwain32.exe

pid	process
4344	mstwain32.exe
4344	mstwain32.exe
4344	mstwain32.exe
4344	mstwain32.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

mstwain32.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mstwain32 = "C:\\Windows\\mstwain32.exe"	mstwain32.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\	mstwain32.exe

Checks whether UAC is enabled 1 TTPs 3 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

b1a4423932b42fbe7f939599bdc4b8efda756a914d2cdceba2d991c533affdf3.exemstwain32.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	b1a4423932b42fbe7f939599bdc4b8efda756a914d2cdceba2d991c533affdf3.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	mstwain32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	mstwain32.exe

Drops file in Windows directory 4 IoCs

Processes:

b1a4423932b42fbe7f939599bdc4b8efda756a914d2cdceba2d991c533affdf3.exemstwain32.exe

description	ioc	process
File created	C:\Windows\mstwain32.exe	b1a4423932b42fbe7f939599bdc4b8efda756a914d2cdceba2d991c533affdf3.exe
File opened for modification	C:\Windows\mstwain32.exe	b1a4423932b42fbe7f939599bdc4b8efda756a914d2cdceba2d991c533affdf3.exe
File created	C:\Windows\ntdtcstp.dll	mstwain32.exe
File created	C:\Windows\cmsetac.dll	mstwain32.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

b1a4423932b42fbe7f939599bdc4b8efda756a914d2cdceba2d991c533affdf3.exevssvc.exemstwain32.exe

description	pid	process
Token: SeDebugPrivilege	400	b1a4423932b42fbe7f939599bdc4b8efda756a914d2cdceba2d991c533affdf3.exe
Token: SeBackupPrivilege	1396	vssvc.exe
Token: SeRestorePrivilege	1396	vssvc.exe
Token: SeAuditPrivilege	1396	vssvc.exe
Token: SeDebugPrivilege	4344	mstwain32.exe
Token: SeDebugPrivilege	4344	mstwain32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

mstwain32.exe

pid process

4344 mstwain32.exe
4344 mstwain32.exe

pid	process
4344	mstwain32.exe
4344	mstwain32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

b1a4423932b42fbe7f939599bdc4b8efda756a914d2cdceba2d991c533affdf3.exe

description	pid	process	target process
PID 400 wrote to memory of 4344	400	b1a4423932b42fbe7f939599bdc4b8efda756a914d2cdceba2d991c533affdf3.exe	mstwain32.exe
PID 400 wrote to memory of 4344	400	b1a4423932b42fbe7f939599bdc4b8efda756a914d2cdceba2d991c533affdf3.exe	mstwain32.exe
PID 400 wrote to memory of 4344	400	b1a4423932b42fbe7f939599bdc4b8efda756a914d2cdceba2d991c533affdf3.exe	mstwain32.exe

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

mstwain32.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" mstwain32.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	mstwain32.exe

C:\Users\Admin\AppData\Local\Temp\b1a4423932b42fbe7f939599bdc4b8efda756a914d2cdceba2d991c533affdf3.exe
"C:\Users\Admin\AppData\Local\Temp\b1a4423932b42fbe7f939599bdc4b8efda756a914d2cdceba2d991c533affdf3.exe"
1⤵
- Checks computer location settings
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:400
- C:\Windows\mstwain32.exe
  "C:\Windows\mstwain32.exe" \melt "C:\Users\Admin\AppData\Local\Temp\b1a4423932b42fbe7f939599bdc4b8efda756a914d2cdceba2d991c533affdf3.exe"
  2⤵
  - UAC bypass
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Checks whether UAC is enabled
  - Drops file in Windows directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - System policy modification
  PID:4344

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1396

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Bypass User Account Control

1

T1088

Defense Evasion

Bypass User Account Control

1

T1088

Disabling Security Tools

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\cmsetac.dll

Filesize
33KB

MD5
bd0fcdbe19e8d49837eca86c5e9c794d

SHA1
dab86052ebeabccbe996f2e5be8652e0e7909cf4

SHA256
32fb75f8675d0bfc99aac5a3a175ee77383123b94917365a0e60c2cd9d7abdeb

SHA512
277178bdf70045dca57f22ec91772667a65d234d5398a2642606850e89a23b8f56be9d0c0ab54851f2f5fa0d238a73945a111f2e19605e2bbde0cbd6a334b41b

Download Submit
C:\Windows\cmsetac.dll

Filesize
33KB

MD5
bd0fcdbe19e8d49837eca86c5e9c794d

SHA1
dab86052ebeabccbe996f2e5be8652e0e7909cf4

SHA256
32fb75f8675d0bfc99aac5a3a175ee77383123b94917365a0e60c2cd9d7abdeb

SHA512
277178bdf70045dca57f22ec91772667a65d234d5398a2642606850e89a23b8f56be9d0c0ab54851f2f5fa0d238a73945a111f2e19605e2bbde0cbd6a334b41b

Download Submit
C:\Windows\mstwain32.exe

Filesize
110KB

MD5
4fccf442a517578100107113600c0e5f

SHA1
edd14b670a0d1cefbc78c77c24b4d2310c974f30

SHA256
b1a4423932b42fbe7f939599bdc4b8efda756a914d2cdceba2d991c533affdf3

SHA512
7e289c03dd40e9864919553ea6f97afed490188380e24390fbee8bba95d3c833c443bc5c5416894052308ff5f3dd0e229d90799ea69f489048ba8d492c85355a

Download Submit
C:\Windows\mstwain32.exe

Filesize
110KB

MD5
4fccf442a517578100107113600c0e5f

SHA1
edd14b670a0d1cefbc78c77c24b4d2310c974f30

SHA256
b1a4423932b42fbe7f939599bdc4b8efda756a914d2cdceba2d991c533affdf3

SHA512
7e289c03dd40e9864919553ea6f97afed490188380e24390fbee8bba95d3c833c443bc5c5416894052308ff5f3dd0e229d90799ea69f489048ba8d492c85355a

Download Submit
C:\Windows\ntdtcstp.dll

Filesize
7KB

MD5
67587e25a971a141628d7f07bd40ffa0

SHA1
76fcd014539a3bb247cc0b761225f68bd6055f6b

SHA256
e6829866322d68d5c5b78e3d48dcec70a41cdc42c6f357a44fd329f74a8b4378

SHA512
6e6de7aa02c48f8b96b06e5f1160fbc5c95312320636e138cc997ef3362a61bc50ec03db1f06292eb964cd71915ddb2ec2eb741432c7da44215a4acbb576a350

Download Submit
C:\Windows\ntdtcstp.dll

Filesize
7KB

MD5
67587e25a971a141628d7f07bd40ffa0

SHA1
76fcd014539a3bb247cc0b761225f68bd6055f6b

SHA256
e6829866322d68d5c5b78e3d48dcec70a41cdc42c6f357a44fd329f74a8b4378

SHA512
6e6de7aa02c48f8b96b06e5f1160fbc5c95312320636e138cc997ef3362a61bc50ec03db1f06292eb964cd71915ddb2ec2eb741432c7da44215a4acbb576a350

Download Submit
memory/400-132-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/400-137-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/400-133-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4344-140-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4344-134-0x0000000000000000-mapping.dmp

Download
memory/4344-143-0x00000000022F0000-0x00000000022FE000-memory.dmp

Filesize
56KB

Download
memory/4344-144-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads