b7207a103ce1299e860599afb102e14690bb707c605ad5cc73e86165755a1039

General

Target

b7207a103ce1299e860599afb102e14690bb707c605ad5cc73e86165755a1039N.exe
Size

557KB
MD5

f9d3a56b68480206a6768e55dee2c010
SHA1

1fb359d5d49acd58c64c12eadb73ce618a925ff4
SHA256

b7207a103ce1299e860599afb102e14690bb707c605ad5cc73e86165755a1039
SHA512

44c7613b25f653b6c14f140ccc470cef91804f9d2d6caf42bdcdb283571340a8e251f2f33cece2ec8eeb6edc305fafe8529e4450ce4a03bb02fac03a8692c5d4
SSDEEP

6144:AhBqzw2w/0s/DbAgeonk7n7m8po+yUOKKNG0IxSjXKP+c:aqzw2wsEDbZ67fpLyUB/5qLc

Score

7^/10

bootkit discovery persistence spyware stealer upx

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
1548	phdhcty.exe

Executes dropped EXE 2 IoCs

pid	Process
1548	phdhcty.exe
4964	koi.exe

Loads dropped DLL 1 IoCs

pid	Process
4964	koi.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 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2644-0-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral2/memory/2644-2-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral2/files/0x0009000000023411-4.dat	upx
behavioral2/memory/1548-10-0x0000000000400000-0x000000000048B000-memory.dmp	upx

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-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\dtfd = "c:\\Program Files\\lasfo\\koi.exe \"c:\\Program Files\\lasfo\\koivn.dll\",DoAddToFavDlg"	koi.exe

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\a:	koi.exe
File opened (read-only)	\??\h:	koi.exe
File opened (read-only)	\??\l:	koi.exe
File opened (read-only)	\??\p:	koi.exe
File opened (read-only)	\??\t:	koi.exe
File opened (read-only)	\??\z:	koi.exe
File opened (read-only)	\??\x:	koi.exe
File opened (read-only)	\??\b:	koi.exe
File opened (read-only)	\??\e:	koi.exe
File opened (read-only)	\??\j:	koi.exe
File opened (read-only)	\??\k:	koi.exe
File opened (read-only)	\??\n:	koi.exe
File opened (read-only)	\??\v:	koi.exe
File opened (read-only)	\??\i:	koi.exe
File opened (read-only)	\??\o:	koi.exe
File opened (read-only)	\??\q:	koi.exe
File opened (read-only)	\??\r:	koi.exe
File opened (read-only)	\??\s:	koi.exe
File opened (read-only)	\??\y:	koi.exe
File opened (read-only)	\??\g:	koi.exe
File opened (read-only)	\??\m:	koi.exe
File opened (read-only)	\??\u:	koi.exe
File opened (read-only)	\??\w:	koi.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PHYSICALDRIVE0	koi.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\lasfo	phdhcty.exe
File created	\??\c:\Program Files\lasfo\koivn.dll	phdhcty.exe
File created	\??\c:\Program Files\lasfo\koi.exe	phdhcty.exe
File opened for modification	\??\c:\Program Files\lasfo\koi.exe	phdhcty.exe

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b7207a103ce1299e860599afb102e14690bb707c605ad5cc73e86165755a1039N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	phdhcty.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	koi.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
4208	PING.EXE
4488	cmd.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	koi.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	koi.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4208	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4964	koi.exe
4964	koi.exe
4964	koi.exe
4964	koi.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4964	koi.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2644	b7207a103ce1299e860599afb102e14690bb707c605ad5cc73e86165755a1039N.exe
1548	phdhcty.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2644 wrote to memory of 4488	2644	b7207a103ce1299e860599afb102e14690bb707c605ad5cc73e86165755a1039N.exe	82
PID 2644 wrote to memory of 4488	2644	b7207a103ce1299e860599afb102e14690bb707c605ad5cc73e86165755a1039N.exe	82
PID 2644 wrote to memory of 4488	2644	b7207a103ce1299e860599afb102e14690bb707c605ad5cc73e86165755a1039N.exe	82
PID 4488 wrote to memory of 4208	4488	cmd.exe	84
PID 4488 wrote to memory of 4208	4488	cmd.exe	84
PID 4488 wrote to memory of 4208	4488	cmd.exe	84
PID 4488 wrote to memory of 1548	4488	cmd.exe	85
PID 4488 wrote to memory of 1548	4488	cmd.exe	85
PID 4488 wrote to memory of 1548	4488	cmd.exe	85
PID 1548 wrote to memory of 4964	1548	phdhcty.exe	86
PID 1548 wrote to memory of 4964	1548	phdhcty.exe	86
PID 1548 wrote to memory of 4964	1548	phdhcty.exe	86

C:\Users\Admin\AppData\Local\Temp\b7207a103ce1299e860599afb102e14690bb707c605ad5cc73e86165755a1039N.exe
"C:\Users\Admin\AppData\Local\Temp\b7207a103ce1299e860599afb102e14690bb707c605ad5cc73e86165755a1039N.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2644
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\phdhcty.exe "C:\Users\Admin\AppData\Local\Temp\b7207a103ce1299e860599afb102e14690bb707c605ad5cc73e86165755a1039N.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4488
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4208
- - C:\Users\Admin\AppData\Local\Temp\phdhcty.exe
    C:\Users\Admin\AppData\Local\Temp\\phdhcty.exe "C:\Users\Admin\AppData\Local\Temp\b7207a103ce1299e860599afb102e14690bb707c605ad5cc73e86165755a1039N.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1548
  - - \??\c:\Program Files\lasfo\koi.exe
      "c:\Program Files\lasfo\koi.exe" "c:\Program Files\lasfo\koivn.dll",DoAddToFavDlg C:\Users\Admin\AppData\Local\Temp\phdhcty.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Adds Run key to start application
      Enumerates connected drives
      Writes to the Master Boot Record (MBR)
      System Location Discovery: System Language Discovery
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4964

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

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Program Files\lasfo\koi.exe

Filesize
60KB

MD5
889b99c52a60dd49227c5e485a016679

SHA1
8fa889e456aa646a4d0a4349977430ce5fa5e2d7

SHA256
6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

SHA512
08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

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

Filesize
557KB

MD5
68b32a3fe1e3cac22eb36957d8dc2ccd

SHA1
e18955dce6f293261b5d5bdfbcbbcd6865a75ec7

SHA256
55d82c85ddc6be48e2d581c710a1355356c159854988e2b063a75e27c3f08fac

SHA512
2bc0b0b5f1af77902f8c4ba977c2b3308c8e15a471158f6b334b67a7c60cac14bcf03ab46c59845f8995958dd5ddcab05c496fda4e98e416dca5425bc4497488

Download Submit
\??\c:\Program Files\lasfo\koivn.dll

Filesize
171KB

MD5
3ef41fe38ca944b7ef132bf13f0dd20b

SHA1
e7cfaa2d1bd28dd9e1e6eebbce31d3f388db6ba4

SHA256
1a48227f614c39f7f73e2e8985094fff3d8a51a5c38c02cf155f7decbb8a8b4f

SHA512
ebc327b9199304190456b8a80c1d2bdc64dd5d9e5d86712ecade031e889f36b4e34aad9d27529f3ef94ab1ad8003d6dcd5eb822d69a3d4eb1de81eb978d16224

Download Submit
memory/1548-10-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2644-0-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2644-2-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/4964-14-0x0000000010000000-0x0000000010052000-memory.dmp

Filesize
328KB

Download
memory/4964-15-0x0000000002BC0000-0x0000000002BC2000-memory.dmp

Filesize
8KB

Download
memory/4964-16-0x0000000010000000-0x0000000010052000-memory.dmp

Filesize
328KB

Download
memory/4964-17-0x0000000010000000-0x0000000010052000-memory.dmp

Filesize
328KB

Download
memory/4964-18-0x0000000010000000-0x0000000010052000-memory.dmp

Filesize
328KB

Download
memory/4964-19-0x0000000002BC0000-0x0000000002BC2000-memory.dmp

Filesize
8KB

Download
memory/4964-21-0x0000000010000000-0x0000000010052000-memory.dmp

Filesize
328KB

Download
memory/4964-23-0x0000000010000000-0x0000000010052000-memory.dmp

Filesize
328KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads