3fa4dec95c282d7aadf80ea9573ad0b79fcc037348e25ba427000bb884a84afa

Analysis

max time kernel
1s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
30/12/2023, 07:46

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General

Target

12833057a651cc13e0ca13c5e787e865.exe
Size

684KB
MD5

12833057a651cc13e0ca13c5e787e865
SHA1

91b893de10365e5103c0af1dacc3ead518bf312d
SHA256

3fa4dec95c282d7aadf80ea9573ad0b79fcc037348e25ba427000bb884a84afa
SHA512

a42bdd2ee642d8bc789641163b5fe5ba4b3d79322d9e079ae937a93a5841adcd290dd5c895ea2da74c24869aae8f6dc11ec9d0de9398cf5204824824f73bdd2c
SSDEEP

12288:QCspLBd4fGi46m/X9J1OaSYeGtpJmvtSvLQTtrcntmwfgEepwuNIifZ:gVUVm/XT17SYHnGqQTtAVfVOIix

Score

7^/10

discovery spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
2296	mousocoreworker.exe
776	gacutil.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

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1700-0-0x0000000000400000-0x000000000059C000-memory.dmp	upx
behavioral2/memory/1700-64-0x0000000000400000-0x000000000059C000-memory.dmp	upx
behavioral2/memory/1700-101-0x0000000000400000-0x000000000059C000-memory.dmp	upx

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Microsoft.NET\Framework\v2.0.50727\gacutil.exe	12833057a651cc13e0ca13c5e787e865.exe
File created	C:\Windows\Microsoft.NET\Framework\v2.0.50727\gacutil.exe.config	12833057a651cc13e0ca13c5e787e865.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1700 wrote to memory of 1820	1700	12833057a651cc13e0ca13c5e787e865.exe	19
PID 1700 wrote to memory of 1820	1700	12833057a651cc13e0ca13c5e787e865.exe	19
PID 1700 wrote to memory of 1820	1700	12833057a651cc13e0ca13c5e787e865.exe	19
PID 1700 wrote to memory of 2908	1700	12833057a651cc13e0ca13c5e787e865.exe	23
PID 1700 wrote to memory of 2908	1700	12833057a651cc13e0ca13c5e787e865.exe	23
PID 1700 wrote to memory of 2908	1700	12833057a651cc13e0ca13c5e787e865.exe	23
PID 1700 wrote to memory of 1960	1700	12833057a651cc13e0ca13c5e787e865.exe	25
PID 1700 wrote to memory of 1960	1700	12833057a651cc13e0ca13c5e787e865.exe	25
PID 1700 wrote to memory of 1960	1700	12833057a651cc13e0ca13c5e787e865.exe	25
PID 1700 wrote to memory of 2876	1700	12833057a651cc13e0ca13c5e787e865.exe	27
PID 1700 wrote to memory of 2876	1700	12833057a651cc13e0ca13c5e787e865.exe	27
PID 1700 wrote to memory of 2876	1700	12833057a651cc13e0ca13c5e787e865.exe	27
PID 1700 wrote to memory of 2296	1700	12833057a651cc13e0ca13c5e787e865.exe	147
PID 1700 wrote to memory of 2296	1700	12833057a651cc13e0ca13c5e787e865.exe	147
PID 1700 wrote to memory of 2296	1700	12833057a651cc13e0ca13c5e787e865.exe	147
PID 1700 wrote to memory of 4796	1700	12833057a651cc13e0ca13c5e787e865.exe	67
PID 1700 wrote to memory of 4796	1700	12833057a651cc13e0ca13c5e787e865.exe	67
PID 1700 wrote to memory of 4796	1700	12833057a651cc13e0ca13c5e787e865.exe	67
PID 1700 wrote to memory of 3588	1700	12833057a651cc13e0ca13c5e787e865.exe	66
PID 1700 wrote to memory of 3588	1700	12833057a651cc13e0ca13c5e787e865.exe	66
PID 1700 wrote to memory of 3588	1700	12833057a651cc13e0ca13c5e787e865.exe	66
PID 1700 wrote to memory of 776	1700	12833057a651cc13e0ca13c5e787e865.exe	65
PID 1700 wrote to memory of 776	1700	12833057a651cc13e0ca13c5e787e865.exe	65
PID 1700 wrote to memory of 776	1700	12833057a651cc13e0ca13c5e787e865.exe	65

C:\Users\Admin\AppData\Local\Temp\12833057a651cc13e0ca13c5e787e865.exe
"C:\Users\Admin\AppData\Local\Temp\12833057a651cc13e0ca13c5e787e865.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1700
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\regAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\regAsm.exe" /unregister "C:\Users\Admin\AppData\Roaming\ConnectBar\ConnectBar2.dll"
  2⤵
  PID:1820
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\regAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\regAsm.exe" /unregister "C:\Users\Admin\AppData\Roaming\ConnectBar\ShowConnectBar2.dll"
  2⤵
  PID:2908
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\regAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\regAsm.exe" /unregister "C:\Users\Admin\AppData\Roaming\ConnectBar\ConnectBar.dll"
  2⤵
  PID:1960
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\regAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\regAsm.exe" /unregister "C:\Users\Admin\AppData\Roaming\ConnectBar\ConnectBarShower.dll"
  2⤵
  PID:2876
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\gacutil.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\gacutil.exe" /u "C:\Users\Admin\AppData\Roaming\ConnectBar\ConnectBar2.dll"
  2⤵
  PID:2296
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c rd /s /q "C:\Windows\assembly\C:\Users\Admin\AppData\Roaming\ConnectBar\ShowConnectBar2.dll"
  2⤵
  PID:2368
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c rd /s /q "C:\Windows\assembly\C:\Users\Admin\AppData\Roaming\ConnectBar\ConnectBarShower.dll"
  2⤵
  PID:4448
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c rd /s /q "C:\Windows\assembly\GAC_MSIL\C:\Users\Admin\AppData\Roaming\ConnectBar\ConnectBarShower.dll"
  2⤵
  PID:1888
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\gacutil.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\gacutil.exe" /u "C:\Users\Admin\AppData\Roaming\ConnectBar\ConnectBarShower.dll"
  2⤵
  PID:1560
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c rd /s /q "C:\Windows\assembly\C:\Users\Admin\AppData\Roaming\ConnectBar\ConnectBar.dll"
  2⤵
  PID:4860
- C:\Program Files\Internet Explorer\iexplore.exe
  "C:\Program Files\Internet Explorer\iexplore.exe" http://connectbar.net/thankyou.html
  2⤵
  PID:1108
- - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
    "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1108 CREDAT:17410 /prefetch:2
    3⤵
    PID:4428
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\regAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\regAsm.exe" "C:\Users\Admin\AppData\Roaming\ConnectBar\ShowConnectBar2.dll"
  2⤵
  PID:2828
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\regAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\regAsm.exe" "C:\Users\Admin\AppData\Roaming\ConnectBar\ConnectBar2.dll"
  2⤵
  PID:4864
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\gacutil.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\gacutil.exe" /if "C:\Users\Admin\AppData\Roaming\ConnectBar\ShowConnectBar2.dll"
  2⤵
  PID:2496
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\gacutil.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\gacutil.exe" /if "C:\Users\Admin\AppData\Roaming\ConnectBar\ConnectBar2.dll"
  2⤵
  PID:4648
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\gacutil.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\gacutil.exe" /if "C:\Users\Admin\AppData\Roaming\ConnectBar\BandObjectLib.dll"
  2⤵
  PID:1648
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\gacutil.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\gacutil.exe" /if "C:\Users\Admin\AppData\Roaming\ConnectBar\HtmlEditor.dll"
  2⤵
  PID:2236
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\gacutil.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\gacutil.exe" /if "C:\Users\Admin\AppData\Roaming\ConnectBar\Interop.SHDocVw.dll"
  2⤵
  PID:4868
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c rd /s /q "C:\Windows\assembly\GAC_MSIL\C:\Users\Admin\AppData\Roaming\ConnectBar\ConnectBar.dll"
  2⤵
  PID:3360
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\gacutil.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\gacutil.exe" /u "C:\Users\Admin\AppData\Roaming\ConnectBar\ConnectBar.dll"
  2⤵
  PID:3996
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c rd /s /q "C:\Windows\assembly\GAC_MSIL\C:\Users\Admin\AppData\Roaming\ConnectBar\ShowConnectBar2.dll"
  2⤵
  PID:452
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\gacutil.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\gacutil.exe" /u "C:\Users\Admin\AppData\Roaming\ConnectBar\ShowConnectBar2.dll"
  2⤵
  - Executes dropped EXE
  PID:776
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c rd /s /q "C:\Windows\assembly\C:\Users\Admin\AppData\Roaming\ConnectBar\ConnectBar2.dll"
  2⤵
  PID:3588
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c rd /s /q "C:\Windows\assembly\GAC_MSIL\C:\Users\Admin\AppData\Roaming\ConnectBar\ConnectBar2.dll"
  2⤵
  PID:4796

C:\Windows\System32\mousocoreworker.exe
C:\Windows\System32\mousocoreworker.exe -Embedding
1⤵
- Executes dropped EXE
PID:2296

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\regAsm.exe.log

Filesize
20B

MD5
b3ac9d09e3a47d5fd00c37e075a70ecb

SHA1
ad14e6d0e07b00bd10d77a06d68841b20675680b

SHA256
7a23c6e7ccd8811ecdf038d3a89d5c7d68ed37324bae2d4954125d9128fa9432

SHA512
09b609ee1061205aa45b3c954efc6c1a03c8fd6b3011ff88cf2c060e19b1d7fd51ee0cb9d02a39310125f3a66aa0146261bdee3d804f472034df711bc942e316

Download Submit
memory/1700-0-0x0000000000400000-0x000000000059C000-memory.dmp

Filesize
1.6MB

Download
memory/1700-1-0x0000000002560000-0x0000000002561000-memory.dmp

Filesize
4KB

Download
memory/1700-64-0x0000000000400000-0x000000000059C000-memory.dmp

Filesize
1.6MB

Download
memory/1700-65-0x0000000002560000-0x0000000002561000-memory.dmp

Filesize
4KB

Download
memory/1700-101-0x0000000000400000-0x000000000059C000-memory.dmp

Filesize
1.6MB

Download
memory/1820-4-0x0000000073DF0000-0x00000000743A1000-memory.dmp

Filesize
5.7MB

Download
memory/1820-7-0x0000000073DF0000-0x00000000743A1000-memory.dmp

Filesize
5.7MB

Download
memory/1820-5-0x0000000002B60000-0x0000000002B70000-memory.dmp

Filesize
64KB

Download
memory/1820-8-0x0000000073DF0000-0x00000000743A1000-memory.dmp

Filesize
5.7MB

Download
memory/1820-81-0x0000000073DF0000-0x00000000743A1000-memory.dmp

Filesize
5.7MB

Download
memory/1960-98-0x0000000073DF0000-0x00000000743A1000-memory.dmp

Filesize
5.7MB

Download
memory/1960-12-0x0000000073DF0000-0x00000000743A1000-memory.dmp

Filesize
5.7MB

Download
memory/1960-11-0x0000000073DF0000-0x00000000743A1000-memory.dmp

Filesize
5.7MB

Download
memory/2236-40-0x00000000031E0000-0x00000000031F0000-memory.dmp

Filesize
64KB

Download
memory/2828-97-0x0000000073DF0000-0x00000000743A1000-memory.dmp

Filesize
5.7MB

Download
memory/2828-96-0x0000000073DF0000-0x00000000743A1000-memory.dmp

Filesize
5.7MB

Download
memory/2876-13-0x0000000073DF0000-0x00000000743A1000-memory.dmp

Filesize
5.7MB

Download
memory/2908-88-0x0000000073DF0000-0x00000000743A1000-memory.dmp

Filesize
5.7MB

Download
memory/2908-10-0x0000000073DF0000-0x00000000743A1000-memory.dmp

Filesize
5.7MB

Download
memory/4648-56-0x0000000002970000-0x0000000002980000-memory.dmp

Filesize
64KB

Download
memory/4648-107-0x0000000002970000-0x0000000002980000-memory.dmp

Filesize
64KB

Download
memory/4864-80-0x0000000073DF0000-0x00000000743A1000-memory.dmp

Filesize
5.7MB

Download
memory/4864-74-0x0000000073DF0000-0x00000000743A1000-memory.dmp

Filesize
5.7MB

Download
memory/4864-87-0x0000000073DF0000-0x00000000743A1000-memory.dmp

Filesize
5.7MB

Download
memory/4864-79-0x00000000014B0000-0x00000000014C0000-memory.dmp

Filesize
64KB

Download
memory/4868-31-0x0000000002D50000-0x0000000002D60000-memory.dmp

Filesize
64KB

Download