d207c28a1c1844f285e3f522dd506e858628583fa3ad7686f270d1efc880bd46

Analysis

max time kernel
143s
max time network
137s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
09/05/2024, 04:21

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General

Target
d207c28a1c1844f285e3f522dd506e858628583fa3ad7686f270d1efc880bd46.exe
Size 256KB
Sample240509-ey2fwsad4z
SHA256 d207c28a1c1844f285e3f522dd506e858628583fa3ad7686f270d1efc880bd46
MD5 7ff8f28fc0ee3d106150a6c2c993d6b9
SHA1 8a4cb0b9c82dfb8031bd2d41ac34ac543082114a
SHA512 1c29f73f73a2c1cd6d465508506d69552dc18f8fe2b436ade169e2c94b8777bff1af39ae940ba5c033740647c5f60f0071ba2646d4cf91234fed91a2c4b5d059
SSDEEP 6144:iyHJ4wTB5Ia9p+S0dSpTU+h/zquE1j57Lu6Bwc772:ig4wTvoS05kzNEj7Lu6n
MD5 SHA1 SHA512 SSDEEP

Score

9^/10

bootkit persistence spyware stealer

Malware Config

Signatures

Detects executables containing base64 encoded User Agent 4 IoCs

resource	yara_rule
behavioral2/memory/3908-19-0x0000000010000000-0x000000001004F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3908-21-0x0000000010000000-0x000000001004F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3908-23-0x0000000010000000-0x000000001004F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3908-26-0x0000000010000000-0x000000001004F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Deletes itself 1 IoCs

pid	Process
440	kmpqoycmj.exe

Executes dropped EXE 2 IoCs

pid	Process
440	kmpqoycmj.exe
3908	kjhricc.exe

Loads dropped DLL 1 IoCs

pid	Process
3908	kjhricc.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-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Depend = "c:\\Program Files\\ghhrhcrrs\\kjhricc.exe \"c:\\Program Files\\ghhrhcrrs\\kjhricc.dll\",Compliance"	kjhricc.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:	kjhricc.exe
File opened (read-only)	\??\e:	kjhricc.exe
File opened (read-only)	\??\p:	kjhricc.exe
File opened (read-only)	\??\q:	kjhricc.exe
File opened (read-only)	\??\r:	kjhricc.exe
File opened (read-only)	\??\t:	kjhricc.exe
File opened (read-only)	\??\v:	kjhricc.exe
File opened (read-only)	\??\g:	kjhricc.exe
File opened (read-only)	\??\l:	kjhricc.exe
File opened (read-only)	\??\m:	kjhricc.exe
File opened (read-only)	\??\n:	kjhricc.exe
File opened (read-only)	\??\s:	kjhricc.exe
File opened (read-only)	\??\x:	kjhricc.exe
File opened (read-only)	\??\y:	kjhricc.exe
File opened (read-only)	\??\z:	kjhricc.exe
File opened (read-only)	\??\b:	kjhricc.exe
File opened (read-only)	\??\h:	kjhricc.exe
File opened (read-only)	\??\k:	kjhricc.exe
File opened (read-only)	\??\w:	kjhricc.exe
File opened (read-only)	\??\i:	kjhricc.exe
File opened (read-only)	\??\j:	kjhricc.exe
File opened (read-only)	\??\o:	kjhricc.exe
File opened (read-only)	\??\u:	kjhricc.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	kjhricc.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	\??\c:\Program Files\ghhrhcrrs\kjhricc.dll	kmpqoycmj.exe
File created	\??\c:\Program Files\ghhrhcrrs\kjhricc.exe	kmpqoycmj.exe
File opened for modification	\??\c:\Program Files\ghhrhcrrs\kjhricc.exe	kmpqoycmj.exe
File opened for modification	\??\c:\Program Files\ghhrhcrrs	kmpqoycmj.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	kjhricc.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kjhricc.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1540	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3908	kjhricc.exe
3908	kjhricc.exe
3908	kjhricc.exe
3908	kjhricc.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3908	kjhricc.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
324	d207c28a1c1844f285e3f522dd506e858628583fa3ad7686f270d1efc880bd46.exe
440	kmpqoycmj.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 324 wrote to memory of 4692	324	d207c28a1c1844f285e3f522dd506e858628583fa3ad7686f270d1efc880bd46.exe	85
PID 324 wrote to memory of 4692	324	d207c28a1c1844f285e3f522dd506e858628583fa3ad7686f270d1efc880bd46.exe	85
PID 324 wrote to memory of 4692	324	d207c28a1c1844f285e3f522dd506e858628583fa3ad7686f270d1efc880bd46.exe	85
PID 4692 wrote to memory of 1540	4692	cmd.exe	87
PID 4692 wrote to memory of 1540	4692	cmd.exe	87
PID 4692 wrote to memory of 1540	4692	cmd.exe	87
PID 4692 wrote to memory of 440	4692	cmd.exe	92
PID 4692 wrote to memory of 440	4692	cmd.exe	92
PID 4692 wrote to memory of 440	4692	cmd.exe	92
PID 440 wrote to memory of 3908	440	kmpqoycmj.exe	93
PID 440 wrote to memory of 3908	440	kmpqoycmj.exe	93
PID 440 wrote to memory of 3908	440	kmpqoycmj.exe	93

C:\Users\Admin\AppData\Local\Temp\d207c28a1c1844f285e3f522dd506e858628583fa3ad7686f270d1efc880bd46.exe
"C:\Users\Admin\AppData\Local\Temp\d207c28a1c1844f285e3f522dd506e858628583fa3ad7686f270d1efc880bd46.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:324
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\kmpqoycmj.exe "C:\Users\Admin\AppData\Local\Temp\d207c28a1c1844f285e3f522dd506e858628583fa3ad7686f270d1efc880bd46.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4692
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - Runs ping.exe
    PID:1540
- - C:\Users\Admin\AppData\Local\Temp\kmpqoycmj.exe
    C:\Users\Admin\AppData\Local\Temp\\kmpqoycmj.exe "C:\Users\Admin\AppData\Local\Temp\d207c28a1c1844f285e3f522dd506e858628583fa3ad7686f270d1efc880bd46.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Drops file in Program Files directory
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:440
  - - \??\c:\Program Files\ghhrhcrrs\kjhricc.exe
      "c:\Program Files\ghhrhcrrs\kjhricc.exe" "c:\Program Files\ghhrhcrrs\kjhricc.dll",Compliance C:\Users\Admin\AppData\Local\Temp\kmpqoycmj.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Adds Run key to start application
      Enumerates connected drives
      Writes to the Master Boot Record (MBR)
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3908

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

kjhricc.exe

Path C:\Program Files\ghhrhcrrs\kjhricc.exe
Size 60KB
SHA256 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
MD5 889b99c52a60dd49227c5e485a016679
SHA1 8fa889e456aa646a4d0a4349977430ce5fa5e2d7
SHA512 08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641
SSDEEP 1536:H9ykYCTdiHQKrFXmw2RQln5IUmDjoX6+:HlMHprF2nRQln5I
MD5 SHA1 SHA512 SSDEEP

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kmpqoycmj.exe

Path C:\Users\Admin\AppData\Local\Temp\kmpqoycmj.exe
Size 257KB
SHA256 12aa0d73ada691f6956ee06d965593e0b931afa21638dbb3bfaa61e4b0d7ae79
MD5 05a604b94a568d928ad334c82baf88d1
SHA1 d458613f3f584c1d176962373271ed51c4cc3861
SHA512 28264b6ad748f86da17c99b221a8e9b2436d12f8329d3cb644f1364e166d02592442647d1b48fc81c79bdfee01077bc2e4b65fe9a39b58979c9e90ecb6a2467a
SSDEEP 6144:iyHJ4wTB5Ia9p+S0dSpTU+h/zquE1j57Lu6Bwc772H:ig4wTvoS05kzNEj7Lu6nm
MD5 SHA1 SHA512 SSDEEP

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kjhricc.dll

Path \??\c:\Program Files\ghhrhcrrs\kjhricc.dll
Size 179KB
SHA256 a03577b0b03819f515c155c16b187c47a485d076f5f1882bd82356b3f45e52f7
MD5 2c09733d3d009e7c3a8c3aeb122a3272
SHA1 38c6147257ef23307a5b65d893a9f4ba42121d9f
SHA512 6f6df9514a08c9acbc02df3ef434be98a5dadb8319e3ad7f1e5d7845e6c7caf07aad98f6e14002c6bf2add93d72f824a15530227a77f6e4c7e1b5be05c0aa61c
SSDEEP 3072:EC5Wpfs98nVCWdKycHtld8VBt7NUalwXH9RqYzJabTYd3KIdj6+uFdi98pvO0hfD:ECOfQ8nVcycHrd8VBtBUa4HfRzJabT8M
MD5 SHA1 SHA512 SSDEEP

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memory/324-4-0x0000000000400000-0x000000000044D01D-memory.dmp

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memory/324-0-0x0000000000400000-0x000000000044D01D-memory.dmp

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memory/324-1-0x00000000001C0000-0x00000000001C1000-memory.dmp

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memory/440-9-0x00000000001C0000-0x00000000001C1000-memory.dmp

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memory/440-8-0x0000000000400000-0x000000000044D01D-memory.dmp

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memory/440-15-0x0000000000400000-0x000000000044D01D-memory.dmp

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memory/3908-20-0x0000000000E50000-0x0000000000E51000-memory.dmp

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memory/3908-19-0x0000000010000000-0x000000001004F000-memory.dmp

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memory/3908-21-0x0000000010000000-0x000000001004F000-memory.dmp

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memory/3908-23-0x0000000010000000-0x000000001004F000-memory.dmp

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memory/3908-26-0x0000000010000000-0x000000001004F000-memory.dmp

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