4a5c822b4e83e0722ae8aa1842b05b4022587eb2808ef8b1c84382b1f2527c8a

General

Target

b19cc27771394c3d90c28fdb23215cc3_JC.exe
Size

438KB
MD5

b19cc27771394c3d90c28fdb23215cc3
SHA1

6dd020356de5c48dbfdc9028b4b0996cee99bf92
SHA256

4a5c822b4e83e0722ae8aa1842b05b4022587eb2808ef8b1c84382b1f2527c8a
SHA512

a50a17f774d6f392e8bec312a0cd76757869e8f9f1f291b3f016b6e95834dc6a23abf26e5ef163b0294c977007a5eab570a81ef18509fc7d1ad97c6f02ecb5d3
SSDEEP

6144:/GrpJMpqojYraTWomVjJO0DDDjC/tPhpTkPpMPM7Atvt44No/WxMc85V2JEI0KWB:/CKseWomPrHD2FPbkPV7exj85VTI0QtM

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
5036	KwksuOBKSIfS3gh.exe
1724	CTS.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 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2632-0-0x00000000006C0000-0x00000000006DF000-memory.dmp	upx
behavioral2/files/0x00070000000231ba-7.dat	upx
behavioral2/memory/1724-9-0x0000000000760000-0x000000000077F000-memory.dmp	upx
behavioral2/files/0x00070000000231ba-10.dat	upx
behavioral2/memory/2632-8-0x00000000006C0000-0x00000000006DF000-memory.dmp	upx
behavioral2/memory/1724-12-0x0000000000760000-0x000000000077F000-memory.dmp	upx
behavioral2/files/0x00080000000230c2-14.dat	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	b19cc27771394c3d90c28fdb23215cc3_JC.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	CTS.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	b19cc27771394c3d90c28fdb23215cc3_JC.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2632	b19cc27771394c3d90c28fdb23215cc3_JC.exe
Token: SeDebugPrivilege	1724	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2632 wrote to memory of 5036	2632	b19cc27771394c3d90c28fdb23215cc3_JC.exe	85
PID 2632 wrote to memory of 5036	2632	b19cc27771394c3d90c28fdb23215cc3_JC.exe	85
PID 2632 wrote to memory of 1724	2632	b19cc27771394c3d90c28fdb23215cc3_JC.exe	86
PID 2632 wrote to memory of 1724	2632	b19cc27771394c3d90c28fdb23215cc3_JC.exe	86
PID 2632 wrote to memory of 1724	2632	b19cc27771394c3d90c28fdb23215cc3_JC.exe	86

C:\Users\Admin\AppData\Local\Temp\b19cc27771394c3d90c28fdb23215cc3_JC.exe
"C:\Users\Admin\AppData\Local\Temp\b19cc27771394c3d90c28fdb23215cc3_JC.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2632
- C:\Users\Admin\AppData\Local\Temp\KwksuOBKSIfS3gh.exe
  C:\Users\Admin\AppData\Local\Temp\KwksuOBKSIfS3gh.exe
  2⤵
  - Executes dropped EXE
  PID:5036
- C:\Windows\CTS.exe
  "C:\Windows\CTS.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - Suspicious use of AdjustPrivilegeToken
  PID:1724

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml

Filesize
708KB

MD5
464b2792cb3a3bdc0d6ac9e7e1d6b6fd

SHA1
eafdd6a0346f5bfcd9e93a2a65db3abc325ea869

SHA256
eef13ad46cafc3a68eda3840b20f1b611ce256b6cdf402ace27049cdd58a865f

SHA512
9e2c9c1ec6ac72ae4754b6db9b858702a4ed6b52db98cc46637892ac4642c532cafd5efe8da958fd0b413e5fa48f2a875b68c304ad9bc976880452248d717e24

Download Submit
C:\Users\Admin\AppData\Local\Temp\KwksuOBKSIfS3gh.exe

Filesize
54KB

MD5
c8d2c80a4c03e145790204cb3f6096f8

SHA1
4ba1ec9dba5110de37a0bff0c3df6d86cc9f5978

SHA256
f519772708f5a1a6e68ebce244a7fc3dde35785b909cba5d6ce86e0e67a6a046

SHA512
8de35a03fb864d0ea2e35d8d95e17f4c9d368455bd3922700066b1f59aeff8787dc85aada5d88742dcef7f17ca00472ae1fb4b9402bc92e9d19ce86d9763194b

Download Submit
C:\Users\Admin\AppData\Local\Temp\KwksuOBKSIfS3gh.exe

Filesize
54KB

MD5
c8d2c80a4c03e145790204cb3f6096f8

SHA1
4ba1ec9dba5110de37a0bff0c3df6d86cc9f5978

SHA256
f519772708f5a1a6e68ebce244a7fc3dde35785b909cba5d6ce86e0e67a6a046

SHA512
8de35a03fb864d0ea2e35d8d95e17f4c9d368455bd3922700066b1f59aeff8787dc85aada5d88742dcef7f17ca00472ae1fb4b9402bc92e9d19ce86d9763194b

Download Submit
C:\Windows\CTS.exe

Filesize
384KB

MD5
31b238222edc598837bfb5f2c427c170

SHA1
ec7f705b62c172124079b3d1341fe06ed080e565

SHA256
b339c27af9fdd8aee7f8fdf41ebadd5b56ec25a9c60a9691b9e3008f9dd0cfee

SHA512
ba49b9b780a5438c5ae1093998e560de2e920cb1d15d608c1f52a5434f42044e2cca0d1abeaaf69693aae3dfa9702f5837269793d16017a50d46204919689add

Download Submit
C:\Windows\CTS.exe

Filesize
384KB

MD5
31b238222edc598837bfb5f2c427c170

SHA1
ec7f705b62c172124079b3d1341fe06ed080e565

SHA256
b339c27af9fdd8aee7f8fdf41ebadd5b56ec25a9c60a9691b9e3008f9dd0cfee

SHA512
ba49b9b780a5438c5ae1093998e560de2e920cb1d15d608c1f52a5434f42044e2cca0d1abeaaf69693aae3dfa9702f5837269793d16017a50d46204919689add

Download Submit
memory/1724-9-0x0000000000760000-0x000000000077F000-memory.dmp

Filesize
124KB

Download
memory/1724-12-0x0000000000760000-0x000000000077F000-memory.dmp

Filesize
124KB

Download
memory/2632-0-0x00000000006C0000-0x00000000006DF000-memory.dmp

Filesize
124KB

Download
memory/2632-8-0x00000000006C0000-0x00000000006DF000-memory.dmp

Filesize
124KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads