cbeb7cc33a42f659233eb8badf106f5ae4368f0da5bd6383042d7f7557fbb60b

Analysis

max time kernel
119s
max time network
118s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
15/07/2024, 08:06

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General

Target

ad3ae230313b3b19eb716f2234cd4020N.exe
Size

238KB
MD5

ad3ae230313b3b19eb716f2234cd4020
SHA1

5ef3250fafa00b06d1c26481abd170ad1bab3e47
SHA256

cbeb7cc33a42f659233eb8badf106f5ae4368f0da5bd6383042d7f7557fbb60b
SHA512

279a347dd642569d58470dca2d50f72592a8f98c893b3a8d99033358a73ca308468ad7a3585d7aa5f4c305c430a6ca71782fa397fd4ed7403172002f9d6ddabe
SSDEEP

3072:hsXRmUIMitiMQose27vc+Eld+xZp2vPRL1tT06zJoxAWBcKpSP//dwR1l9B4hTJ:GR5IuMQoseGk7RZBGxAycKpSPX2pUD

Score

10^/10

evasion persistence spyware stealer

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3419463127-3903270268-2580331543-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe, C:\\Users\\Admin\\AppData\\Local\\_foldernamelocalappdata_\\mmcbase32.exe"	mmcbase32.exe

Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3419463127-3903270268-2580331543-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	mmcbase32.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-3419463127-3903270268-2580331543-1000\Control Panel\International\Geo\Nation	ad3ae230313b3b19eb716f2234cd4020N.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3419463127-3903270268-2580331543-1000\Control Panel\International\Geo\Nation	mmcbase32.exe

Executes dropped EXE 3 IoCs

pid	Process
2004	mmcbase32.exe
3324	mmcbase32.exe
1516	mmcbase32.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

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-1-5-21-3419463127-3903270268-2580331543-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mmcbase32 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ad3ae230313b3b19eb716f2234cd4020N.exe"	ad3ae230313b3b19eb716f2234cd4020N.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
14	pastebin.com
16	pastebin.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2004 set thread context of 2704	2004	mmcbase32.exe	95

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

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4612	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
1764	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe
2004	mmcbase32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2004	mmcbase32.exe
Token: SeDebugPrivilege	2704	InstallUtil.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2952 wrote to memory of 2004	2952	ad3ae230313b3b19eb716f2234cd4020N.exe	86
PID 2952 wrote to memory of 2004	2952	ad3ae230313b3b19eb716f2234cd4020N.exe	86
PID 2952 wrote to memory of 3244	2952	ad3ae230313b3b19eb716f2234cd4020N.exe	87
PID 2952 wrote to memory of 3244	2952	ad3ae230313b3b19eb716f2234cd4020N.exe	87
PID 2952 wrote to memory of 1812	2952	ad3ae230313b3b19eb716f2234cd4020N.exe	89
PID 2952 wrote to memory of 1812	2952	ad3ae230313b3b19eb716f2234cd4020N.exe	89
PID 1812 wrote to memory of 4612	1812	cmd.exe	91
PID 1812 wrote to memory of 4612	1812	cmd.exe	91
PID 2004 wrote to memory of 1764	2004	mmcbase32.exe	92
PID 2004 wrote to memory of 1764	2004	mmcbase32.exe	92
PID 2004 wrote to memory of 2704	2004	mmcbase32.exe	95
PID 2004 wrote to memory of 2704	2004	mmcbase32.exe	95
PID 2004 wrote to memory of 2704	2004	mmcbase32.exe	95
PID 2004 wrote to memory of 2704	2004	mmcbase32.exe	95
PID 2004 wrote to memory of 2704	2004	mmcbase32.exe	95
PID 2004 wrote to memory of 2704	2004	mmcbase32.exe	95
PID 2004 wrote to memory of 2704	2004	mmcbase32.exe	95
PID 2004 wrote to memory of 2704	2004	mmcbase32.exe	95

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\ad3ae230313b3b19eb716f2234cd4020N.exe
"C:\Users\Admin\AppData\Local\Temp\ad3ae230313b3b19eb716f2234cd4020N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2952
- C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\mmcbase32.exe
  "C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\mmcbase32.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Modifies visiblity of hidden/system files in Explorer
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2004
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /tn Admin /tr "\"C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\mmcbase32.exe\" arguments" /sc MINUTE /mo 1
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1764
- - \??\c:\windows\microsoft.net\framework\v2.0.50727\InstallUtil.exe
    "c:\windows\microsoft.net\framework\v2.0.50727\\InstallUtil.exe" C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\mmcbase32.exe
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2704
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe"
  2⤵
  PID:3244
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout /t 5 && del "C:\Users\Admin\AppData\Local\Temp\ad3ae230313b3b19eb716f2234cd4020N.exe" && del "C:\Users\Admin\AppData\Local\Temp\ad3ae230313b3b19eb716f2234cd4020N.exe.config"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1812
- - C:\Windows\system32\timeout.exe
    timeout /t 5
    3⤵
    - Delays execution with timeout.exe
    PID:4612

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:3496

C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\mmcbase32.exe
C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\mmcbase32.exe arguments
1⤵
- Executes dropped EXE
PID:3324

C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\mmcbase32.exe
C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\mmcbase32.exe arguments
1⤵
- Executes dropped EXE
PID:1516

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0\UsageLogs\mmcbase32.exe.log

Filesize
595B

MD5
5446caf843683ea0aab610c729c40ab1

SHA1
6df96e9c6c90843766b0fde8cec5e3a955291e74

SHA256
f7dbd089564c22c13483b867392a7bd1f9b49f8e0b089e2cc7bd7bfbf62c6329

SHA512
488e2b8750ff820e3fbdcbb9201abddfc6c8ccc3e7cc29962a05c2313ea862eddbf4e0a49ab6a5029aa4d9c137daf2623f1b34e4dcb896269e6edae8276148ff

Download Submit
C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\mmcbase32.exe

Filesize
238KB

MD5
f33c2edd7548f4a9f4090ebbbc0cb181

SHA1
9d367aa1b4d8262c64e8db3ec5fcae0ab9843eda

SHA256
655b941912d42f7d900597a4a40f3ded286cf6e2f804f7283b994e8f61dc6fc9

SHA512
5cbb284144c8eba9afcaaed108293d2011dce2b7ef8b51524616a0dfd9a8e47a8516ecc6df9c1d498463280897fd0903544a9cd65e5c56f754bac27bad95a2c3

Download Submit
C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\mmcbase32.exe.config

Filesize
1KB

MD5
dd3d04c365984b4ec57a80503f81fddf

SHA1
c55fbcb61818e47dac9aae465faff91f0805bd7c

SHA256
40a59ca9744dc3d4647f246b2dc553f37f8095418c1b48a9bd94cdb5c03dbc5c

SHA512
0dd459def2abe9e3f0d1251049a0755c63f7dd3d85e91dba272c3f479f2578e3f3f2379e1cd6913190f7f596af721201eb5d9423ab28aed72bde5cd3cac7f785

Download Submit
memory/1516-41-0x000000001CB30000-0x000000001CB52000-memory.dmp

Filesize
136KB

Download
memory/2004-31-0x0000000000CE0000-0x0000000000D02000-memory.dmp

Filesize
136KB

Download
memory/2004-33-0x000000001FC30000-0x000000001FC92000-memory.dmp

Filesize
392KB

Download
memory/2004-37-0x00007FFE51D80000-0x00007FFE52721000-memory.dmp

Filesize
9.6MB

Download
memory/2004-30-0x00007FFE51D80000-0x00007FFE52721000-memory.dmp

Filesize
9.6MB

Download
memory/2004-29-0x00007FFE51D80000-0x00007FFE52721000-memory.dmp

Filesize
9.6MB

Download
memory/2004-26-0x00007FFE51D80000-0x00007FFE52721000-memory.dmp

Filesize
9.6MB

Download
memory/2704-32-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2952-3-0x000000001C1B0000-0x000000001C24C000-memory.dmp

Filesize
624KB

Download
memory/2952-0-0x00007FFE52035000-0x00007FFE52036000-memory.dmp

Filesize
4KB

Download
memory/2952-10-0x000000001C540000-0x000000001C562000-memory.dmp

Filesize
136KB

Download
memory/2952-28-0x00007FFE51D80000-0x00007FFE52721000-memory.dmp

Filesize
9.6MB

Download
memory/2952-9-0x00007FFE51D80000-0x00007FFE52721000-memory.dmp

Filesize
9.6MB

Download
memory/2952-8-0x00007FFE51D80000-0x00007FFE52721000-memory.dmp

Filesize
9.6MB

Download
memory/2952-7-0x00007FFE51D80000-0x00007FFE52721000-memory.dmp

Filesize
9.6MB

Download
memory/2952-4-0x000000001B7F0000-0x000000001B7F8000-memory.dmp

Filesize
32KB

Download
memory/2952-11-0x000000001EE10000-0x000000001EEB6000-memory.dmp

Filesize
664KB

Download
memory/2952-5-0x000000001C3C0000-0x000000001C426000-memory.dmp

Filesize
408KB

Download
memory/2952-2-0x000000001BCE0000-0x000000001C1AE000-memory.dmp

Filesize
4.8MB

Download
memory/2952-6-0x00007FFE51D80000-0x00007FFE52721000-memory.dmp

Filesize
9.6MB

Download
memory/2952-1-0x00007FFE51D80000-0x00007FFE52721000-memory.dmp

Filesize
9.6MB

Download
memory/3324-35-0x000000001E800000-0x000000001E822000-memory.dmp

Filesize
136KB

Download