fatalrat | 5bfca14fd1270fab7d4938c493d032b836d3704cd08bacc06b67d9644cd5ef3f

Analysis

max time kernel
120s
max time network
148s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
17-10-2024 10:38

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General

Target

Chrome.exe
Size

4.5MB
MD5

b0b24f27fd7823afb7e2504f8bb74f0d
SHA1

5cd5517b9e52666fcba2ad8044bf4a93eef9c45f
SHA256

427136f3126d5e890c18c4b24823c42c10eec2653fb45c64da928888ee8dff04
SHA512

e40419252d0816305072327cd8e02e7f85f0aff3e669b1c639e54f06d2c30d4763aa53a1ef7afdc79a6c960b159ec040e58da109483050aa1403d821ec5a310a
SSDEEP

98304:jDNMJGPpKZ9AaI7lg/EbOL+FH29q03z/JPPoImScAlL8R4CaowrdVi0aM:jJM4UwF7l9SqFH25j/xQIJc4AR4iwhYs

Score

10^/10

fatalrat aspackv2 discovery evasion infostealer persistence rat trojan upx

Malware Config

Signatures

FatalRat
FatalRat is a modular infostealer family written in C++ first appearing in June 2021.
infostealer rat fatalrat

Fatal Rat payload 1 IoCs

rat infostealer

Processes:

resource	yara_rule
behavioral1/memory/2120-62-0x0000000010000000-0x0000000010029000-memory.dmp	fatalrat

ASPack v2.12-2.42 1 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

Processes:

resource	yara_rule
behavioral1/files/0x0030000000018b71-6.dat	aspack_v212_v242

Deletes itself 1 IoCs

Processes:

cmd.exe

pid	Process
2984	cmd.exe

Executes dropped EXE 3 IoCs

Processes:

uml.exeQTalk.exespolsvt.exe

pid	Process
3032	uml.exe
2784	QTalk.exe
2120	spolsvt.exe

Loads dropped DLL 4 IoCs

Processes:

Chrome.exeuml.exeQTalk.exe

pid	Process
2004	Chrome.exe
3032	uml.exe
2784	QTalk.exe
2784	QTalk.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

uml.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Çý¶¯ÈËÉú = "C:\\Users\\Public\\Documents\\sougou\\PTvrst.exe"	uml.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

uml.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	uml.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

QTalk.exe

description	pid	Process	procid_target
PID 2784 set thread context of 2120	2784	QTalk.exe	32

UPX packed file 2 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2004-0-0x0000000000400000-0x000000000042D000-memory.dmp	upx
behavioral1/memory/2004-80-0x0000000000400000-0x000000000042D000-memory.dmp	upx

Drops file in Program Files directory 4 IoCs

Processes:

Chrome.exe

description	ioc	Process
File opened for modification	C:\Program Files (x86)\ChromeSetup.exe	Chrome.exe
File created	C:\Program Files (x86)\uml.exe	Chrome.exe
File opened for modification	C:\Program Files (x86)\uml.exe	Chrome.exe
File created	C:\Program Files (x86)\ChromeSetup.exe	Chrome.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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

Processes:

Chrome.exeuml.exeQTalk.exespolsvt.execmd.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Chrome.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uml.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	QTalk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spolsvt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 56 IoCs

Processes:

uml.exespolsvt.exe

pid	Process
3032	uml.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe
2120	spolsvt.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

spolsvt.exe

description	pid	Process
Token: SeDebugPrivilege	2120	spolsvt.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

uml.exeQTalk.exe

pid	Process
3032	uml.exe
3032	uml.exe
2784	QTalk.exe
2784	QTalk.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

Chrome.exeuml.exeQTalk.exe

description	pid	Process	procid_target
PID 2004 wrote to memory of 3032	2004	Chrome.exe	30
PID 2004 wrote to memory of 3032	2004	Chrome.exe	30
PID 2004 wrote to memory of 3032	2004	Chrome.exe	30
PID 2004 wrote to memory of 3032	2004	Chrome.exe	30
PID 3032 wrote to memory of 2784	3032	uml.exe	31
PID 3032 wrote to memory of 2784	3032	uml.exe	31
PID 3032 wrote to memory of 2784	3032	uml.exe	31
PID 3032 wrote to memory of 2784	3032	uml.exe	31
PID 2784 wrote to memory of 2120	2784	QTalk.exe	32
PID 2784 wrote to memory of 2120	2784	QTalk.exe	32
PID 2784 wrote to memory of 2120	2784	QTalk.exe	32
PID 2784 wrote to memory of 2120	2784	QTalk.exe	32
PID 2784 wrote to memory of 2120	2784	QTalk.exe	32
PID 2784 wrote to memory of 2120	2784	QTalk.exe	32
PID 2784 wrote to memory of 2120	2784	QTalk.exe	32
PID 2784 wrote to memory of 2120	2784	QTalk.exe	32
PID 2784 wrote to memory of 2120	2784	QTalk.exe	32
PID 2004 wrote to memory of 2984	2004	Chrome.exe	33
PID 2004 wrote to memory of 2984	2004	Chrome.exe	33
PID 2004 wrote to memory of 2984	2004	Chrome.exe	33
PID 2004 wrote to memory of 2984	2004	Chrome.exe	33

C:\Users\Admin\AppData\Local\Temp\Chrome.exe
"C:\Users\Admin\AppData\Local\Temp\Chrome.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2004
- C:\Program Files (x86)\uml.exe
  "C:\Program Files (x86)\uml.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Checks whether UAC is enabled
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3032
- - C:\Users\Public\Documents\sougou\V4.6.80\Bin\QTalk.exe
    C:\Users\Public\Documents\sougou\V4.6.80\Bin\QTalk.exe
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2784
  - - C:\Users\Public\Documents\sougou\spolsvt.exe
      C:\Users\Public\Documents\sougou\spolsvt.exe
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2120
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\7ZSfx000.cmd" "
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2984

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

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\7ZSfx000.cmd

Filesize
184B

MD5
a994798dc8a4e132599c71a27a3e5fed

SHA1
77a1dd9802e75e2a576a7ce7d0205d38ebafda4e

SHA256
b579bef02bd91e9b29bcad36144ba04588585614bfcef60c6feb67bf4982b185

SHA512
9b398669b1f1a300e609cdfcfd430214dfbe13c0f822e1d34ae9a7171c51e18a3f2781107c7ace5c0dbf47b26a9e70b9fd93acd345ee9ded9c235ac9058ce154

Download Submit
C:\Users\Public\Documents\sougou\Mpec.mbt

Filesize
92KB

MD5
318ef4be770866dbe650f6a09f26dbe4

SHA1
e28fce78f7f2dea7ba6dd1e337d766d01627b1c9

SHA256
4b9abc5f96d9b4601b989f7f19dbc5de8b53f7eb222904b380fed6c1500ea4de

SHA512
364491819d6f3ae3b5f28c66c7dac3d76eb50efef8d5b2176c121af249f52ba5b75dd39aaedfa69ef60ca0f3d546e8fb9184cd5964676b4c714eb6f978137ff3

Download Submit
C:\Users\Public\Documents\sougou\spolsvt.exe

Filesize
9KB

MD5
523d5c39f9d8d2375c3df68251fa2249

SHA1
d4ed365c44bec9246fc1a65a32a7791792647a10

SHA256
20e3dc90a3e83b6202e2a7f4603b60e5e859639cb68693426c400b13aaeabd78

SHA512
526e1bba30d03f1ac177c6ab7409187a730969c429cebef15da68ffcf44b3b93227781eebc827b2f7a0fa17c391e00a0e532263fd0167aeaeb0456f96cfe3ae4

Download Submit
\Program Files (x86)\uml.exe

Filesize
3.3MB

MD5
b53790aac23d8428eb29b7446720540f

SHA1
b5426e9b098d703a12938bfb7b1c9d01b8b64526

SHA256
262bdc45768069f2040d8a825bbde430b69c672bc1f3c9b0caa3b3cfd2c9f455

SHA512
a91305e40dcd1e0325f80fc85f67a018b924ab24547988d486773441dc051cb279bcf12079f042b979f68fd82a308de852f9b8b51ff466e291a855785d4dfbb9

Download Submit
memory/2004-10-0x0000000002540000-0x0000000002B16000-memory.dmp

Filesize
5.8MB

Download
memory/2004-80-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/2004-0-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/2120-60-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2120-50-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2120-56-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2120-55-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2120-53-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2120-52-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2120-49-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2120-62-0x0000000010000000-0x0000000010029000-memory.dmp

Filesize
164KB

Download
memory/2784-41-0x0000000000400000-0x00000000009D6000-memory.dmp

Filesize
5.8MB

Download
memory/2784-42-0x0000000000400000-0x00000000009D6000-memory.dmp

Filesize
5.8MB

Download
memory/2784-44-0x0000000000400000-0x00000000009D6000-memory.dmp

Filesize
5.8MB

Download
memory/2784-43-0x0000000000400000-0x00000000009D6000-memory.dmp

Filesize
5.8MB

Download
memory/2784-61-0x0000000000400000-0x00000000009D6000-memory.dmp

Filesize
5.8MB

Download
memory/3032-12-0x0000000000400000-0x00000000009D6000-memory.dmp

Filesize
5.8MB

Download
memory/3032-67-0x0000000000400000-0x00000000009D6000-memory.dmp

Filesize
5.8MB

Download
memory/3032-15-0x0000000000401000-0x00000000004A5000-memory.dmp

Filesize
656KB

Download
memory/3032-14-0x0000000000400000-0x00000000009D6000-memory.dmp

Filesize
5.8MB

Download
memory/3032-13-0x0000000000400000-0x00000000009D6000-memory.dmp

Filesize
5.8MB

Download
memory/3032-11-0x0000000000400000-0x00000000009D6000-memory.dmp

Filesize
5.8MB

Download
memory/3032-40-0x0000000003BE0000-0x00000000041B6000-memory.dmp

Filesize
5.8MB

Download