6cd72e7c6b9775eea3a98c9d7f533557b4d9f7b714d91d31e6248cefe52e186a

Analysis

max time kernel
149s
max time network
146s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
01-07-2024 03:22

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General

Target

6cd72e7c6b9775eea3a98c9d7f533557b4d9f7b714d91d31e6248cefe52e186a.exe
Size

407KB
MD5

7e492f30b9fbf2ec6566e525fff7ab3b
SHA1

1e8cf3feda33cdf31296806d33b80c8d72b74d66
SHA256

6cd72e7c6b9775eea3a98c9d7f533557b4d9f7b714d91d31e6248cefe52e186a
SHA512

11ba4bed8659c7e1aa77888a4f793b0adce204e8f5cedc73ed71a3d4df93f5835abdb248733f9c3d17ca2243974453f7b7c1447c58b47e675a11ed4d4992e85d
SSDEEP

6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4:gtRfJcNYFNm8UhlZGse

Score

8^/10

bootkit persistence spyware stealer

Malware Config

Signatures

Blocklisted process makes network request 10 IoCs

Processes:

rundll32.exe

flow pid process

3 1428 rundll32.exe
5 1428 rundll32.exe
6 1428 rundll32.exe
7 1428 rundll32.exe
8 1428 rundll32.exe
9 1428 rundll32.exe
10 1428 rundll32.exe
11 1428 rundll32.exe
13 1428 rundll32.exe
14 1428 rundll32.exe
Deletes itself 1 IoCs

Processes:

hfjan.exe

pid process

3008 hfjan.exe
Executes dropped EXE 1 IoCs

Processes:

hfjan.exe

pid process

3008 hfjan.exe
Loads dropped DLL 6 IoCs

Processes:

cmd.exerundll32.exe

pid process

1940 cmd.exe
1940 cmd.exe
1428 rundll32.exe
1428 rundll32.exe
1428 rundll32.exe
1428 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

flow	pid	process
3	1428	rundll32.exe
5	1428	rundll32.exe
6	1428	rundll32.exe
7	1428	rundll32.exe
8	1428	rundll32.exe
9	1428	rundll32.exe
10	1428	rundll32.exe
11	1428	rundll32.exe
13	1428	rundll32.exe
14	1428	rundll32.exe

pid	process
3008	hfjan.exe

pid	process
3008	hfjan.exe

pid	process
1940	cmd.exe
1940	cmd.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	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-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Run\Dotx = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\ewwxb\\hrnnn.dll\",Verify"	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)	\??\r:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	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
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

rundll32.exe

pid process

1428 rundll32.exe
Drops file in Program Files directory 2 IoCs

Processes:

hfjan.exe

description ioc process

File opened for modification \??\c:\Program Files\ewwxb hfjan.exe
File created \??\c:\Program Files\ewwxb\hrnnn.dll hfjan.exe

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

description	ioc	process
File opened for modification	\??\c:\Program Files\ewwxb	hfjan.exe
File created	\??\c:\Program Files\ewwxb\hrnnn.dll	hfjan.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

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

2616 PING.EXE

pid	process
2616	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

rundll32.exe

pid	process
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe
1428	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

rundll32.exe

description pid process

Token: SeDebugPrivilege 1428 rundll32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

6cd72e7c6b9775eea3a98c9d7f533557b4d9f7b714d91d31e6248cefe52e186a.exehfjan.exe

pid process

1368 6cd72e7c6b9775eea3a98c9d7f533557b4d9f7b714d91d31e6248cefe52e186a.exe
3008 hfjan.exe

description	pid	process
Token: SeDebugPrivilege	1428	rundll32.exe

pid	process
1368	6cd72e7c6b9775eea3a98c9d7f533557b4d9f7b714d91d31e6248cefe52e186a.exe
3008	hfjan.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

6cd72e7c6b9775eea3a98c9d7f533557b4d9f7b714d91d31e6248cefe52e186a.execmd.exehfjan.exe

description	pid	process	target process
PID 1368 wrote to memory of 1940	1368	6cd72e7c6b9775eea3a98c9d7f533557b4d9f7b714d91d31e6248cefe52e186a.exe	cmd.exe
PID 1368 wrote to memory of 1940	1368	6cd72e7c6b9775eea3a98c9d7f533557b4d9f7b714d91d31e6248cefe52e186a.exe	cmd.exe
PID 1368 wrote to memory of 1940	1368	6cd72e7c6b9775eea3a98c9d7f533557b4d9f7b714d91d31e6248cefe52e186a.exe	cmd.exe
PID 1368 wrote to memory of 1940	1368	6cd72e7c6b9775eea3a98c9d7f533557b4d9f7b714d91d31e6248cefe52e186a.exe	cmd.exe
PID 1940 wrote to memory of 2616	1940	cmd.exe	PING.EXE
PID 1940 wrote to memory of 2616	1940	cmd.exe	PING.EXE
PID 1940 wrote to memory of 2616	1940	cmd.exe	PING.EXE
PID 1940 wrote to memory of 2616	1940	cmd.exe	PING.EXE
PID 1940 wrote to memory of 3008	1940	cmd.exe	hfjan.exe
PID 1940 wrote to memory of 3008	1940	cmd.exe	hfjan.exe
PID 1940 wrote to memory of 3008	1940	cmd.exe	hfjan.exe
PID 1940 wrote to memory of 3008	1940	cmd.exe	hfjan.exe
PID 3008 wrote to memory of 1428	3008	hfjan.exe	rundll32.exe
PID 3008 wrote to memory of 1428	3008	hfjan.exe	rundll32.exe
PID 3008 wrote to memory of 1428	3008	hfjan.exe	rundll32.exe
PID 3008 wrote to memory of 1428	3008	hfjan.exe	rundll32.exe
PID 3008 wrote to memory of 1428	3008	hfjan.exe	rundll32.exe
PID 3008 wrote to memory of 1428	3008	hfjan.exe	rundll32.exe
PID 3008 wrote to memory of 1428	3008	hfjan.exe	rundll32.exe

C:\Users\Admin\AppData\Local\Temp\6cd72e7c6b9775eea3a98c9d7f533557b4d9f7b714d91d31e6248cefe52e186a.exe
"C:\Users\Admin\AppData\Local\Temp\6cd72e7c6b9775eea3a98c9d7f533557b4d9f7b714d91d31e6248cefe52e186a.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1368

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\hfjan.exe "C:\Users\Admin\AppData\Local\Temp\6cd72e7c6b9775eea3a98c9d7f533557b4d9f7b714d91d31e6248cefe52e186a.exe"
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1940

C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 2
3⤵
- Runs ping.exe
PID:2616

C:\Users\Admin\AppData\Local\Temp\hfjan.exe
C:\Users\Admin\AppData\Local\Temp\\hfjan.exe "C:\Users\Admin\AppData\Local\Temp\6cd72e7c6b9775eea3a98c9d7f533557b4d9f7b714d91d31e6248cefe52e186a.exe"
3⤵
- Deletes itself
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3008

\??\c:\windows\SysWOW64\rundll32.exe
c:\windows\system32\rundll32.exe "c:\Program Files\ewwxb\hrnnn.dll",Verify C:\Users\Admin\AppData\Local\Temp\hfjan.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)
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1428

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

\??\c:\Program Files\ewwxb\hrnnn.dll
Filesize
228KB

MD5
443c0bafb22ff286f201fcb90cd7e3ef

SHA1
dc1733962eef70996349ef63202d185880fbb16f

SHA256
898888d8a0d07c87f09bbf19040e810de232f1424b01915c07a733f165623957

SHA512
52526fe7bf652d2b3f04750d5837e3f53beb6f8dbdf858d51719ad0bac8f9748abd3390b5433aaa43d2ce6258b4aed9495e01dfe7f7c8b3878908f901eaff89c

Download Submit
\Users\Admin\AppData\Local\Temp\hfjan.exe
Filesize
408KB

MD5
86b1702d26d3fb551edd037a0c9d67ec

SHA1
634c0cafaa7f86e3f58bdc50e16d59ce06148592

SHA256
d6b06d567435b0ca7e8e618acce757642dce3c74085e593cc99cfbee2e0fe2eb

SHA512
c849a1067c5eefbd1e62f15f373b605b1375635ac75d2226e46053e0ea3a5db44e3782c7db89bd54b4cb70dddf38477b32b2e241e8b5faf64efa331a96042a6c

Download Submit
memory/1368-0-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/1368-2-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/1428-17-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/1428-18-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/1428-19-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/1428-21-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/1940-7-0x0000000000300000-0x0000000000364000-memory.dmp

Filesize
400KB

Download
memory/1940-8-0x0000000000300000-0x0000000000364000-memory.dmp

Filesize
400KB

Download
memory/3008-9-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/3008-11-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download