modiloader | f83a681bbba9da64244f71dcca0e5f8981138bd34a22c975a591952397ec6927

General

Target

f83a681bbba9da64244f71dcca0e5f8981138bd34a22c975a591952397ec6927.exe
Size

287KB
MD5

ac05375ca7a9d2877805b5314f7605f5
SHA1

7d8cf73c494df1bb9fcee0b1ffcb404865e72fec
SHA256

f83a681bbba9da64244f71dcca0e5f8981138bd34a22c975a591952397ec6927
SHA512

48c6f8af1dd6ffb15178bd937e13b40b5a34aa84a5648085cd31c58abe8065b84c8f23b2262118a7a13d4ced0448157faef2b981befeff1d78a43ff4db0e0a53
SSDEEP

6144:OG377xS2Vp2CeiorXdwTBgWx42E53wVpcCJJvHp:tr7xS2Vp6RwTyCvBVbJJvHp

Score

10^/10

modiloader evasion persistence trojan

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

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

ModiLoader Second Stage 2 IoCs

resource	yara_rule
behavioral2/files/0x000a00000001db32-134.dat	modiloader_stage2
behavioral2/files/0x000a00000001db32-135.dat	modiloader_stage2

Executes dropped EXE 1 IoCs

pid	Process
4268	mstwain32.exe

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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	f83a681bbba9da64244f71dcca0e5f8981138bd34a22c975a591952397ec6927.exe

Loads dropped DLL 4 IoCs

pid	Process
4268	mstwain32.exe
4268	mstwain32.exe
4268	mstwain32.exe
4268	mstwain32.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mstwain32 = "C:\\Windows\\mstwain32.exe"	mstwain32.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\	mstwain32.exe

Checks whether UAC is enabled 1 TTPs 3 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	f83a681bbba9da64244f71dcca0e5f8981138bd34a22c975a591952397ec6927.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

description	ioc	Process
File created	C:\Windows\ntdtcstp.dll	mstwain32.exe
File created	C:\Windows\cmsetac.dll	mstwain32.exe
File created	C:\Windows\mstwain32.exe	f83a681bbba9da64244f71dcca0e5f8981138bd34a22c975a591952397ec6927.exe
File opened for modification	C:\Windows\mstwain32.exe	f83a681bbba9da64244f71dcca0e5f8981138bd34a22c975a591952397ec6927.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

description	pid	Process
Token: SeDebugPrivilege	896	f83a681bbba9da64244f71dcca0e5f8981138bd34a22c975a591952397ec6927.exe
Token: SeBackupPrivilege	792	vssvc.exe
Token: SeRestorePrivilege	792	vssvc.exe
Token: SeAuditPrivilege	792	vssvc.exe
Token: SeDebugPrivilege	4268	mstwain32.exe
Token: SeDebugPrivilege	4268	mstwain32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4268	mstwain32.exe
4268	mstwain32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 896 wrote to memory of 4268	896	f83a681bbba9da64244f71dcca0e5f8981138bd34a22c975a591952397ec6927.exe	84
PID 896 wrote to memory of 4268	896	f83a681bbba9da64244f71dcca0e5f8981138bd34a22c975a591952397ec6927.exe	84
PID 896 wrote to memory of 4268	896	f83a681bbba9da64244f71dcca0e5f8981138bd34a22c975a591952397ec6927.exe	84

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

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

C:\Users\Admin\AppData\Local\Temp\f83a681bbba9da64244f71dcca0e5f8981138bd34a22c975a591952397ec6927.exe
"C:\Users\Admin\AppData\Local\Temp\f83a681bbba9da64244f71dcca0e5f8981138bd34a22c975a591952397ec6927.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:896
- C:\Windows\mstwain32.exe
  "C:\Windows\mstwain32.exe" \melt "C:\Users\Admin\AppData\Local\Temp\f83a681bbba9da64244f71dcca0e5f8981138bd34a22c975a591952397ec6927.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:4268

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:792

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

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Downloads

C:\Windows\cmsetac.dll

Filesize
33KB

MD5
32415d8a0cff8643214922b58c4722bd

SHA1
8b48e818a1aa6a5d0a5f3e9315bb95d14fb18514

SHA256
3c89e2e6114cdab9d5093e5a5770c2a75b783889a538ea8aec0a7543d911e4b1

SHA512
74dbf41b08a6dbce55bf7b7a4b8b9cc474705263cb7c5de8cbca7193a3ee3a3ad6d92e07ee1f8e313457c3878d38298c0a1dcd87aadd43cc380fee0f64d31712

Download Submit
C:\Windows\cmsetac.dll

Filesize
33KB

MD5
32415d8a0cff8643214922b58c4722bd

SHA1
8b48e818a1aa6a5d0a5f3e9315bb95d14fb18514

SHA256
3c89e2e6114cdab9d5093e5a5770c2a75b783889a538ea8aec0a7543d911e4b1

SHA512
74dbf41b08a6dbce55bf7b7a4b8b9cc474705263cb7c5de8cbca7193a3ee3a3ad6d92e07ee1f8e313457c3878d38298c0a1dcd87aadd43cc380fee0f64d31712

Download Submit
C:\Windows\mstwain32.exe

Filesize
287KB

MD5
ac05375ca7a9d2877805b5314f7605f5

SHA1
7d8cf73c494df1bb9fcee0b1ffcb404865e72fec

SHA256
f83a681bbba9da64244f71dcca0e5f8981138bd34a22c975a591952397ec6927

SHA512
48c6f8af1dd6ffb15178bd937e13b40b5a34aa84a5648085cd31c58abe8065b84c8f23b2262118a7a13d4ced0448157faef2b981befeff1d78a43ff4db0e0a53

Download Submit
C:\Windows\mstwain32.exe

Filesize
287KB

MD5
ac05375ca7a9d2877805b5314f7605f5

SHA1
7d8cf73c494df1bb9fcee0b1ffcb404865e72fec

SHA256
f83a681bbba9da64244f71dcca0e5f8981138bd34a22c975a591952397ec6927

SHA512
48c6f8af1dd6ffb15178bd937e13b40b5a34aa84a5648085cd31c58abe8065b84c8f23b2262118a7a13d4ced0448157faef2b981befeff1d78a43ff4db0e0a53

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/4268-140-0x0000000003080000-0x000000000308E000-memory.dmp

Filesize
56KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads