ae6f1ecf892d0e4face593cda4fc7959b1c2681545311c4bc3cfbf3e7ce4c4fe

General

Target

ae6f1ecf892d0e4face593cda4fc7959b1c2681545311c4bc3cfbf3e7ce4c4fe.exe
Size

114KB
MD5

bf50d947bb927bbd051ba64ec83d7c6a
SHA1

099e9ac8f8cd4e4e675767df0b0100488ab7f98e
SHA256

ae6f1ecf892d0e4face593cda4fc7959b1c2681545311c4bc3cfbf3e7ce4c4fe
SHA512

601a0427691a2decb0814b304d50b6d639986d1d7fab72fec6a6b5f3b479fdd8c3e459e58a5f1b1289e379778e65234a1206830163a870805b1020db8ddedf73
SSDEEP

3072:EagwS1Ut+KNPJI1F3Md55keTZwcM2I38QXyZ:vUGPJKF3Md55ZTZwz38QX+

Score

9^/10

bootkit persistence spyware stealer

Malware Config

Signatures

Detects executables containing base64 encoded User Agent 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2644-16-0x0000000010000000-0x0000000010028000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/2644-20-0x0000000010000000-0x0000000010028000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/2644-21-0x0000000010000000-0x0000000010028000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/2644-23-0x0000000010000000-0x0000000010028000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 8 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2864-10-0x0000000000400000-0x000000000043C200-memory.dmp	UPX
behavioral1/memory/2864-12-0x0000000000400000-0x000000000043C200-memory.dmp	UPX
\??\c:\rpfwav\tahqc.aqt	UPX
behavioral1/memory/2644-15-0x0000000010000000-0x0000000010028000-memory.dmp	UPX
behavioral1/memory/2644-16-0x0000000010000000-0x0000000010028000-memory.dmp	UPX
behavioral1/memory/2644-20-0x0000000010000000-0x0000000010028000-memory.dmp	UPX
behavioral1/memory/2644-21-0x0000000010000000-0x0000000010028000-memory.dmp	UPX
behavioral1/memory/2644-23-0x0000000010000000-0x0000000010028000-memory.dmp	UPX

Blocklisted process makes network request 6 IoCs

Processes:

rundll32.exe

flow pid process

4 2644 rundll32.exe
5 2644 rundll32.exe
7 2644 rundll32.exe
8 2644 rundll32.exe
9 2644 rundll32.exe
10 2644 rundll32.exe

flow	pid	process
4	2644	rundll32.exe
5	2644	rundll32.exe
7	2644	rundll32.exe
8	2644	rundll32.exe
9	2644	rundll32.exe
10	2644	rundll32.exe

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

Processes:

resource	yara_rule
\??\c:\rpfwav\tahqc.aqt	acprotect

Deletes itself 1 IoCs

Processes:

kexfb.exe

pid process

2864 kexfb.exe
Executes dropped EXE 1 IoCs

Processes:

kexfb.exe

pid process

2864 kexfb.exe
Loads dropped DLL 3 IoCs

Processes:

cmd.exerundll32.exe

pid process

2836 cmd.exe
2836 cmd.exe
2644 rundll32.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

pid	process
2864	kexfb.exe

pid	process
2864	kexfb.exe

pid	process
2836	cmd.exe
2836	cmd.exe
2644	rundll32.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

rundll32.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\rpfwav\\tahqc.aqt\",LoadXML"	rundll32.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

Processes:

rundll32.exe

description	ioc	process
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.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

Processes:

rundll32.exe

description ioc process

File opened for modification \??\PHYSICALDRIVE0 rundll32.exe

description	ioc	process
File opened for modification	\??\PHYSICALDRIVE0	rundll32.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

Processes:

rundll32.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe

Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

3008 taskkill.exe
Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

3064 PING.EXE

pid	process
3008	taskkill.exe

pid	process
3064	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

rundll32.exe

pid	process
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe
2644	rundll32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

rundll32.exetaskkill.exe

description pid process

Token: SeDebugPrivilege 2644 rundll32.exe
Token: SeDebugPrivilege 3008 taskkill.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

ae6f1ecf892d0e4face593cda4fc7959b1c2681545311c4bc3cfbf3e7ce4c4fe.exekexfb.exe

pid process

1340 ae6f1ecf892d0e4face593cda4fc7959b1c2681545311c4bc3cfbf3e7ce4c4fe.exe
2864 kexfb.exe

description	pid	process
Token: SeDebugPrivilege	2644	rundll32.exe
Token: SeDebugPrivilege	3008	taskkill.exe

pid	process
1340	ae6f1ecf892d0e4face593cda4fc7959b1c2681545311c4bc3cfbf3e7ce4c4fe.exe
2864	kexfb.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

ae6f1ecf892d0e4face593cda4fc7959b1c2681545311c4bc3cfbf3e7ce4c4fe.execmd.exekexfb.exerundll32.exe

description	pid	process	target process
PID 1340 wrote to memory of 2836	1340	ae6f1ecf892d0e4face593cda4fc7959b1c2681545311c4bc3cfbf3e7ce4c4fe.exe	cmd.exe
PID 1340 wrote to memory of 2836	1340	ae6f1ecf892d0e4face593cda4fc7959b1c2681545311c4bc3cfbf3e7ce4c4fe.exe	cmd.exe
PID 1340 wrote to memory of 2836	1340	ae6f1ecf892d0e4face593cda4fc7959b1c2681545311c4bc3cfbf3e7ce4c4fe.exe	cmd.exe
PID 1340 wrote to memory of 2836	1340	ae6f1ecf892d0e4face593cda4fc7959b1c2681545311c4bc3cfbf3e7ce4c4fe.exe	cmd.exe
PID 2836 wrote to memory of 3064	2836	cmd.exe	PING.EXE
PID 2836 wrote to memory of 3064	2836	cmd.exe	PING.EXE
PID 2836 wrote to memory of 3064	2836	cmd.exe	PING.EXE
PID 2836 wrote to memory of 3064	2836	cmd.exe	PING.EXE
PID 2836 wrote to memory of 2864	2836	cmd.exe	kexfb.exe
PID 2836 wrote to memory of 2864	2836	cmd.exe	kexfb.exe
PID 2836 wrote to memory of 2864	2836	cmd.exe	kexfb.exe
PID 2836 wrote to memory of 2864	2836	cmd.exe	kexfb.exe
PID 2864 wrote to memory of 2644	2864	kexfb.exe	rundll32.exe
PID 2864 wrote to memory of 2644	2864	kexfb.exe	rundll32.exe
PID 2864 wrote to memory of 2644	2864	kexfb.exe	rundll32.exe
PID 2864 wrote to memory of 2644	2864	kexfb.exe	rundll32.exe
PID 2864 wrote to memory of 2644	2864	kexfb.exe	rundll32.exe
PID 2864 wrote to memory of 2644	2864	kexfb.exe	rundll32.exe
PID 2864 wrote to memory of 2644	2864	kexfb.exe	rundll32.exe
PID 2644 wrote to memory of 3008	2644	rundll32.exe	taskkill.exe
PID 2644 wrote to memory of 3008	2644	rundll32.exe	taskkill.exe
PID 2644 wrote to memory of 3008	2644	rundll32.exe	taskkill.exe
PID 2644 wrote to memory of 3008	2644	rundll32.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\ae6f1ecf892d0e4face593cda4fc7959b1c2681545311c4bc3cfbf3e7ce4c4fe.exe
"C:\Users\Admin\AppData\Local\Temp\ae6f1ecf892d0e4face593cda4fc7959b1c2681545311c4bc3cfbf3e7ce4c4fe.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1340

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\kexfb.exe "C:\Users\Admin\AppData\Local\Temp\ae6f1ecf892d0e4face593cda4fc7959b1c2681545311c4bc3cfbf3e7ce4c4fe.exe"
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2836

C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 2
3⤵
- Runs ping.exe
PID:3064

C:\Users\Admin\AppData\Local\Temp\kexfb.exe
C:\Users\Admin\AppData\Local\Temp\\kexfb.exe "C:\Users\Admin\AppData\Local\Temp\ae6f1ecf892d0e4face593cda4fc7959b1c2681545311c4bc3cfbf3e7ce4c4fe.exe"
3⤵
- Deletes itself
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2864

\??\c:\windows\SysWOW64\rundll32.exe
c:\windows\system32\rundll32.exe "c:\rpfwav\tahqc.aqt",LoadXML C:\Users\Admin\AppData\Local\Temp\kexfb.exe
4⤵
- Blocklisted process makes network request
- 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
- Suspicious use of WriteProcessMemory
PID:2644

\??\c:\windows\SysWOW64\taskkill.exe
taskkill /f /im attrib.exe
5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:3008

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

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

\??\c:\rpfwav\tahqc.aqt

Filesize
68KB

MD5
230bd5cd04a5f8ea04af339783d1bf58

SHA1
803b2400b5e2146853dca3908e58f96bd554f1e0

SHA256
7590edd94bd18449a3432a0054cf3e6ed53f8bd01202e1706f82f83056c0f029

SHA512
9500742bc2798e94e78ae24736b51c5294e4aecce5c1e3b77151fdf04fc7ac0da8eda8be5a6a9c5cc44308eb2ea6c40902f6b4ab1d0997ece103e83a97ab0729

Download Submit
\Users\Admin\AppData\Local\Temp\kexfb.exe

Filesize
114KB

MD5
d2d8f0299e06da790b25cbbf6c781b18

SHA1
38cbe7ad413306422dbe944d77608e16eff1d534

SHA256
cc819130d862d003b262acb2d9ba6770b61549339d84b62aeedd8642bf6a1d67

SHA512
3dcee123ec7a93f5b5c60570f4c6e22d2089d082a597bd806ce1f7e2154a882173973172e14fe5d79333e3dc9001a8916484ef6af17950d6727ed5081f51b9dd

Download Submit
memory/1340-1-0x0000000000400000-0x000000000043C200-memory.dmp

Filesize
240KB

Download
memory/1340-3-0x0000000000400000-0x000000000043C200-memory.dmp

Filesize
240KB

Download
memory/1340-0-0x0000000000400000-0x000000000043C200-memory.dmp

Filesize
240KB

Download
memory/2644-15-0x0000000010000000-0x0000000010028000-memory.dmp

Filesize
160KB

Download
memory/2644-16-0x0000000010000000-0x0000000010028000-memory.dmp

Filesize
160KB

Download
memory/2644-20-0x0000000010000000-0x0000000010028000-memory.dmp

Filesize
160KB

Download
memory/2644-21-0x0000000010000000-0x0000000010028000-memory.dmp

Filesize
160KB

Download
memory/2644-23-0x0000000010000000-0x0000000010028000-memory.dmp

Filesize
160KB

Download
memory/2836-9-0x00000000000F0000-0x000000000012D000-memory.dmp

Filesize
244KB

Download
memory/2836-5-0x00000000000F0000-0x000000000012D000-memory.dmp

Filesize
244KB

Download
memory/2864-10-0x0000000000400000-0x000000000043C200-memory.dmp

Filesize
240KB

Download
memory/2864-12-0x0000000000400000-0x000000000043C200-memory.dmp

Filesize
240KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads