fatalrat | 24b31819e09dd8eaa1c26a08c1a4e7ae55063c7ebb3dbd0273968d13a4f0d0e3

Resubmissions

02-12-2024 06:58

241202-hrp13azmep 10

02-12-2024 04:09

241202-eqvclstrbk 10

Analysis

max time kernel
150s
max time network
148s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02-12-2024 04:09

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General

Target

24b31819e09dd8eaa1c26a08c1a4e7ae55063c7ebb3dbd0273968d13a4f0d0e3.exe
Size

4.5MB
MD5

0b002ffd1ba0c617cfd6f25f75d8432e
SHA1

9a102e169744d9a28e575efecadc53b9d77fb751
SHA256

24b31819e09dd8eaa1c26a08c1a4e7ae55063c7ebb3dbd0273968d13a4f0d0e3
SHA512

52236ec4b8d3df89a7c60937c8d886ca05285cd77e639b731075368ef6bf80f973ae978d24123127d3785c8254f718c0556dc6b55be9355c4ac77bfb88f7172b
SSDEEP

49152:9YJMpJc32PMgJjQhGp7fOU3h1hyiTrMIx7Rtpb68N54+97boAXuE+OPnmr7DvjZd:9Og51Mgr/txTbV7+6W

Score

10^/10

fatalrat discovery infostealer rat

Malware Config

Signatures

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

Fatal Rat payload 1 IoCs

rat infostealer

Processes:

resource	yara_rule
behavioral1/memory/1460-73-0x0000000000260000-0x000000000028A000-memory.dmp	fatalrat

Drops startup file 2 IoCs

Processes:

HBd7W5.exe

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Macromedia-Packages.lnk	HBd7W5.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Macromedia-Packages.lnk	HBd7W5.exe

Executes dropped EXE 2 IoCs

Processes:

HBd7W5.exeHBd7W5.exe

pid	Process
2620	HBd7W5.exe
1460	HBd7W5.exe

Loads dropped DLL 1 IoCs

Processes:

HBd7W5.exe

pid	Process
1460	HBd7W5.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 2 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:

HBd7W5.exeHBd7W5.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HBd7W5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HBd7W5.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:

HBd7W5.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	HBd7W5.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	HBd7W5.exe

Modifies data under HKEY_USERS 6 IoCs

Processes:

cmd.exe

description	ioc	Process
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions\Cached\{DFFACDC5-679F-4156-8947-C5C76BC0B67F} {ADD8BA80-002B-11D0-8F0F-00C04FD7D062} 0xFFFF = 0100000000000000909741f66f44db01	cmd.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	cmd.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	cmd.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	cmd.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Shell Extensions\Cached	cmd.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions\Cached\{6C467336-8281-4E60-8204-430CED96822D} {000214E4-0000-0000-C000-000000000046} 0xFFFF = 010000000000000030363ff66f44db01	cmd.exe

Suspicious behavior: CmdExeWriteProcessMemorySpam 2 IoCs

Processes:

HBd7W5.exeHBd7W5.exe

pid	Process
2620	HBd7W5.exe
1460	HBd7W5.exe

Suspicious behavior: EnumeratesProcesses 54 IoCs

Processes:

24b31819e09dd8eaa1c26a08c1a4e7ae55063c7ebb3dbd0273968d13a4f0d0e3.exeHBd7W5.exe

pid	Process
1480	24b31819e09dd8eaa1c26a08c1a4e7ae55063c7ebb3dbd0273968d13a4f0d0e3.exe
1480	24b31819e09dd8eaa1c26a08c1a4e7ae55063c7ebb3dbd0273968d13a4f0d0e3.exe
1480	24b31819e09dd8eaa1c26a08c1a4e7ae55063c7ebb3dbd0273968d13a4f0d0e3.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe
1460	HBd7W5.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

HBd7W5.exe

description	pid	Process
Token: SeDebugPrivilege	1460	HBd7W5.exe
Token: SeDebugPrivilege	1460	HBd7W5.exe

Suspicious use of SetWindowsHookEx 6 IoCs

Processes:

wordpad.exeHBd7W5.exe

pid	Process
2796	wordpad.exe
2796	wordpad.exe
2796	wordpad.exe
2796	wordpad.exe
2796	wordpad.exe
1460	HBd7W5.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

24b31819e09dd8eaa1c26a08c1a4e7ae55063c7ebb3dbd0273968d13a4f0d0e3.exewrite.execmd.execmd.exe

description	pid	Process	procid_target
PID 1480 wrote to memory of 2308	1480	24b31819e09dd8eaa1c26a08c1a4e7ae55063c7ebb3dbd0273968d13a4f0d0e3.exe	33
PID 1480 wrote to memory of 2308	1480	24b31819e09dd8eaa1c26a08c1a4e7ae55063c7ebb3dbd0273968d13a4f0d0e3.exe	33
PID 1480 wrote to memory of 2308	1480	24b31819e09dd8eaa1c26a08c1a4e7ae55063c7ebb3dbd0273968d13a4f0d0e3.exe	33
PID 2308 wrote to memory of 2796	2308	write.exe	34
PID 2308 wrote to memory of 2796	2308	write.exe	34
PID 2308 wrote to memory of 2796	2308	write.exe	34
PID 2824 wrote to memory of 2620	2824	cmd.exe	36
PID 2824 wrote to memory of 2620	2824	cmd.exe	36
PID 2824 wrote to memory of 2620	2824	cmd.exe	36
PID 2824 wrote to memory of 2620	2824	cmd.exe	36
PID 1480 wrote to memory of 1648	1480	24b31819e09dd8eaa1c26a08c1a4e7ae55063c7ebb3dbd0273968d13a4f0d0e3.exe	38
PID 1480 wrote to memory of 1648	1480	24b31819e09dd8eaa1c26a08c1a4e7ae55063c7ebb3dbd0273968d13a4f0d0e3.exe	38
PID 1480 wrote to memory of 1648	1480	24b31819e09dd8eaa1c26a08c1a4e7ae55063c7ebb3dbd0273968d13a4f0d0e3.exe	38
PID 1648 wrote to memory of 1460	1648	cmd.exe	39
PID 1648 wrote to memory of 1460	1648	cmd.exe	39
PID 1648 wrote to memory of 1460	1648	cmd.exe	39
PID 1648 wrote to memory of 1460	1648	cmd.exe	39

C:\Users\Admin\AppData\Local\Temp\24b31819e09dd8eaa1c26a08c1a4e7ae55063c7ebb3dbd0273968d13a4f0d0e3.exe
"C:\Users\Admin\AppData\Local\Temp\24b31819e09dd8eaa1c26a08c1a4e7ae55063c7ebb3dbd0273968d13a4f0d0e3.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1480
- C:\Windows\System32\write.exe
  "C:\Windows\System32\write.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2308
- - C:\Program Files\Windows NT\Accessories\wordpad.exe
    "C:\Program Files\Windows NT\Accessories\wordpad.exe"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:2796
- C:\Windows\System32\cmd.exe
  cmd /c start "" "C:\ProgramData\HBd7W5\HBd7W5.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1648
- - C:\ProgramData\HBd7W5\HBd7W5.exe
    "C:\ProgramData\HBd7W5\HBd7W5.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Checks processor information in registry
    - Suspicious behavior: CmdExeWriteProcessMemorySpam
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:1460

C:\Windows\system32\cmd.exe
cmd /c start C:\Users\Admin\Desktop\HBd7.lnk
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of WriteProcessMemory
PID:2824
- C:\Users\Admin\AppData\Roaming\HBd7W5.exe
  "C:\Users\Admin\AppData\Roaming\HBd7W5.exe" -n C:\Users\Admin\AppData\Roaming\HBd7W.zip -d C:\Users\Admin\AppData\Roaming
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: CmdExeWriteProcessMemorySpam
  PID:2620

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

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:\ProgramData\HBd7W5\HBd7W5.exe

Filesize
508KB

MD5
a79a2e0b7f299ab2f80ee8315679baee

SHA1
43d76adbcc19e4c8b60ffba419797a22b756e927

SHA256
0a804e7efe38d6eba358781597205519b936239e9daebcdf2f71c62c6a416f5c

SHA512
f246044eb82e2d4562081b0041ba2109cbda385b335b3bf10d3408acda6ae0c605ab1a522a7f5f363dfd6417e6825ff7d2831d42b8e4440d012fdf33ec605649

Download Submit
C:\ProgramData\HBd7W5\VEDecoder.dll

Filesize
1.6MB

MD5
d6a3fed112ab4e6bfe32cbe220dc225d

SHA1
bb9190ee490c46959e2bc192009f7773222dfa12

SHA256
8d89d4282f514acf2d7ef3ff7a618bbd513a84538ad309f2a48bff77c202bd58

SHA512
043b866e32db62bf8deb4ad9aa896b8274813cf1e6e4e575a3afc595893b5e5265a0430f6a1010c80db955114a0f9d9c3f4e0b3ee47b3323fb2bbcda5b6b7f61

Download Submit
C:\ProgramData\HBd7W5\longlq.cl

Filesize
1.2MB

MD5
6652b3a6e7290de3f12a5f94b9b72b8c

SHA1
4702a4305f14c8437787343de339fa4f0a4b4d75

SHA256
946d9c70c3ae9d8b22530a844547494c60668a6a3b0cf4e25f84f03a0781743e

SHA512
38950c74297de0820ba606680ad74252dc0f8a4c9d46bdb73b903da55ab7b243a4ae7fa6812f026d2b4ec47b8000454e944be587cb788d592ab30d3848b77d34

Download Submit
C:\Users\Admin\AppData\Roaming\HBd7W.zip

Filesize
686B

MD5
0a1a36248e03f967e9c23218b66b2658

SHA1
fd158796e0d1b146d5f2d94ba08d97ad7d9573dc

SHA256
4bb7f0ee6a2f6ff35c193d8d9c39188249f20ac1adcb74ec4a737f544746a7f5

SHA512
66a1dd15b1b38a9a8a71f0f26e6015d64d014be31e96de3ad35c7a7432cc8b3f80ba99f53c47655d84ea70154441212ea81fc6484c2ff49aa4017fd92d75b6d1

Download Submit
C:\Users\Admin\AppData\Roaming\HBd7W5.exe

Filesize
105KB

MD5
6b8ebc942fe392c669b0b21bc8f83a03

SHA1
18fb9645a7365ae17b8386e47bec0b5ba6f5122f

SHA256
e5a35deff01c93f658ab8c4192570ad9ae5ffaa4f5f6d1b4db99f176bf5bdbe7

SHA512
0953d528c5d07b22fa0a969c98d569cf68e58450e1fc0179ddb2068cb4c429d23044a71005fd0daebe7e0c896c5a7598c5329e4c040be9099dfb1e62a2686589

Download Submit
C:\Users\Admin\Desktop\HBd7.lnk

Filesize
869B

MD5
dbbe8e8232cadebf4acef7e1e82a8ac5

SHA1
5310336c47348146262aeea3b808d3f91233f8a9

SHA256
fc101ad27c6fd6aaf600e164c52b7e6a89ad0e44a108d63e20f9a1d9270b0b45

SHA512
0d3992a8cc7fb91fb3ac2b3f5a0060836b9693f8d005c40737b7081b38530c96e44e7cf8323905574e754faf2177a32cca0c29e4e2b0b9bc051165eb04873686

Download Submit
C:\Users\Admin\Desktop\HBd7.lnk

Filesize
1KB

MD5
fd8fdfaef41e01b645b11940131ca4a6

SHA1
0d7a6876f3e94cfc162ba134a9d977fb3a33401e

SHA256
65db5e4709a1ab36e9a3834f41ba6607a238555b0a2d44ef2e36d9668df05911

SHA512
0339e2d23c43af0e699beb73f284a935bc82e1b9c16b6329b60b4a7e6d4c491276193d4df7b34295f0865942e715fce65cb759d881bc6fc90d26b43d884a7f11

Download Submit
memory/1460-73-0x0000000000260000-0x000000000028A000-memory.dmp

Filesize
168KB

Download
memory/1480-0-0x0000000002570000-0x0000000002956000-memory.dmp

Filesize
3.9MB

Download
memory/1480-70-0x0000000002570000-0x0000000002956000-memory.dmp

Filesize
3.9MB

Download
memory/1480-68-0x0000000000400000-0x0000000000890000-memory.dmp

Filesize
4.6MB

Download
memory/2620-58-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download