arkei | 529586cbbd8586d7f33a3ea9bdd517b7ead617b4e12165106e81e4bfad859474

Analysis

max time kernel
72s
max time network
73s
platform
windows7_x64
resource
win7-20220414-en
submitted
19-06-2022 20:46

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General

Target

d946c183fd128b4acf88d83ee89d79d3.exe
Size

772KB
MD5

d946c183fd128b4acf88d83ee89d79d3
SHA1

6f35da72f339c7101e93a7adada27d24902db598
SHA256

529586cbbd8586d7f33a3ea9bdd517b7ead617b4e12165106e81e4bfad859474
SHA512

793727b08b92df108144308a7ac798e55ba35742308db18466cce6caa564b6c1cb5b0fece2850511450f69e497df1dba49a9cb3a0ff17b4f9cc27e05ef2fcd62

Score

10^/10

arkei recordbreaker default discovery spyware stealer suricata

Malware Config

Extracted

Family

arkei

Botnet

Default

Extracted

Family

recordbreaker

http://136.244.65.99/

http://140.82.52.55/

Signatures

Arkei
Arkei is an infostealer written in C++.
stealer arkei
RecordBreaker
RecordBreaker is an information stealer capable of downloading and executing secondary payloads written in C++.
stealer recordbreaker
suricata: ET MALWARE Base64 Encoded Stealer Config from Server - APPDATA or USERPROFILE Environment Variable M4
suricata: ET MALWARE Base64 Encoded Stealer Config from Server - APPDATA or USERPROFILE Environment Variable M4
suricata
suricata: ET MALWARE Generic Stealer Config Download Request
suricata: ET MALWARE Generic Stealer Config Download Request
suricata
suricata: ET MALWARE Recordbreaker Stealer CnC Checkin
suricata: ET MALWARE Recordbreaker Stealer CnC Checkin
suricata
suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
suricata
suricata: ET MALWARE Win32/Vidar Variant/Mars Stealer CnC Exfil
suricata: ET MALWARE Win32/Vidar Variant/Mars Stealer CnC Exfil
suricata
Downloads MZ/PE file
Executes dropped EXE 2 IoCs

Processes:

fcvtee.exefcvtee.exe

pid process

280 fcvtee.exe
1108 fcvtee.exe

pid	process
280	fcvtee.exe
1108	fcvtee.exe

Loads dropped DLL 7 IoCs

Processes:

d946c183fd128b4acf88d83ee89d79d3.exefcvtee.exed946c183fd128b4acf88d83ee89d79d3.exe

pid	process
1640	d946c183fd128b4acf88d83ee89d79d3.exe
1640	d946c183fd128b4acf88d83ee89d79d3.exe
1108	fcvtee.exe
1108	fcvtee.exe
952	d946c183fd128b4acf88d83ee89d79d3.exe
952	d946c183fd128b4acf88d83ee89d79d3.exe
952	d946c183fd128b4acf88d83ee89d79d3.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
T1081
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Suspicious use of SetThreadContext 2 IoCs

Processes:

fcvtee.exed946c183fd128b4acf88d83ee89d79d3.exe

description	pid	process	target process
PID 280 set thread context of 1108	280	fcvtee.exe	fcvtee.exe
PID 1640 set thread context of 952	1640	d946c183fd128b4acf88d83ee89d79d3.exe	d946c183fd128b4acf88d83ee89d79d3.exe

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

System Information Discovery
T1082

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:

fcvtee.exe

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

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1536 timeout.exe
Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

fcvtee.exed946c183fd128b4acf88d83ee89d79d3.exe

pid process

280 fcvtee.exe
1640 d946c183fd128b4acf88d83ee89d79d3.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

d946c183fd128b4acf88d83ee89d79d3.exefcvtee.exe

pid process

1640 d946c183fd128b4acf88d83ee89d79d3.exe
280 fcvtee.exe

pid	process
1536	timeout.exe

pid	process
280	fcvtee.exe
1640	d946c183fd128b4acf88d83ee89d79d3.exe

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

d946c183fd128b4acf88d83ee89d79d3.exefcvtee.exefcvtee.execmd.exe

description	pid	process	target process
PID 1640 wrote to memory of 280	1640	d946c183fd128b4acf88d83ee89d79d3.exe	fcvtee.exe
PID 1640 wrote to memory of 280	1640	d946c183fd128b4acf88d83ee89d79d3.exe	fcvtee.exe
PID 1640 wrote to memory of 280	1640	d946c183fd128b4acf88d83ee89d79d3.exe	fcvtee.exe
PID 1640 wrote to memory of 280	1640	d946c183fd128b4acf88d83ee89d79d3.exe	fcvtee.exe
PID 280 wrote to memory of 1108	280	fcvtee.exe	fcvtee.exe
PID 280 wrote to memory of 1108	280	fcvtee.exe	fcvtee.exe
PID 280 wrote to memory of 1108	280	fcvtee.exe	fcvtee.exe
PID 280 wrote to memory of 1108	280	fcvtee.exe	fcvtee.exe
PID 280 wrote to memory of 1108	280	fcvtee.exe	fcvtee.exe
PID 1640 wrote to memory of 952	1640	d946c183fd128b4acf88d83ee89d79d3.exe	d946c183fd128b4acf88d83ee89d79d3.exe
PID 1640 wrote to memory of 952	1640	d946c183fd128b4acf88d83ee89d79d3.exe	d946c183fd128b4acf88d83ee89d79d3.exe
PID 1640 wrote to memory of 952	1640	d946c183fd128b4acf88d83ee89d79d3.exe	d946c183fd128b4acf88d83ee89d79d3.exe
PID 1640 wrote to memory of 952	1640	d946c183fd128b4acf88d83ee89d79d3.exe	d946c183fd128b4acf88d83ee89d79d3.exe
PID 1640 wrote to memory of 952	1640	d946c183fd128b4acf88d83ee89d79d3.exe	d946c183fd128b4acf88d83ee89d79d3.exe
PID 1108 wrote to memory of 1864	1108	fcvtee.exe	cmd.exe
PID 1108 wrote to memory of 1864	1108	fcvtee.exe	cmd.exe
PID 1108 wrote to memory of 1864	1108	fcvtee.exe	cmd.exe
PID 1108 wrote to memory of 1864	1108	fcvtee.exe	cmd.exe
PID 1864 wrote to memory of 1536	1864	cmd.exe	timeout.exe
PID 1864 wrote to memory of 1536	1864	cmd.exe	timeout.exe
PID 1864 wrote to memory of 1536	1864	cmd.exe	timeout.exe
PID 1864 wrote to memory of 1536	1864	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\d946c183fd128b4acf88d83ee89d79d3.exe
"C:\Users\Admin\AppData\Local\Temp\d946c183fd128b4acf88d83ee89d79d3.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1640

C:\Users\Admin\AppData\Roaming\fcvtee.exe
"C:\Users\Admin\AppData\Roaming\fcvtee.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:280

C:\Users\Admin\AppData\Roaming\fcvtee.exe
"C:\Users\Admin\AppData\Roaming\fcvtee.exe"
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:1108

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Roaming\fcvtee.exe" & exit
4⤵
- Suspicious use of WriteProcessMemory
PID:1864

C:\Windows\SysWOW64\timeout.exe
timeout /t 5
5⤵
- Delays execution with timeout.exe
PID:1536

C:\Users\Admin\AppData\Local\Temp\d946c183fd128b4acf88d83ee89d79d3.exe
"C:\Users\Admin\AppData\Local\Temp\d946c183fd128b4acf88d83ee89d79d3.exe"
2⤵
- Loads dropped DLL
PID:952

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\fcvtee.exe
Filesize
392KB

MD5
32ab5685131d8bcfa172bf165adf9338

SHA1
5e3b167bc66a15c246a8f29f7b634cbe52731319

SHA256
2a0dc11c02495205fadbbb4a5a5304a9e77fd079dcab58daa04804a59e4cc87e

SHA512
c6a48a49427a260510f08e8fd93a626445e69659c6e60364308163c92866ed43f163fee3e3f44951466457331eb0804d6e97ba623cfab20b7ef52e74c5c3e437

Download Submit
C:\Users\Admin\AppData\Roaming\fcvtee.exe
Filesize
392KB

MD5
32ab5685131d8bcfa172bf165adf9338

SHA1
5e3b167bc66a15c246a8f29f7b634cbe52731319

SHA256
2a0dc11c02495205fadbbb4a5a5304a9e77fd079dcab58daa04804a59e4cc87e

SHA512
c6a48a49427a260510f08e8fd93a626445e69659c6e60364308163c92866ed43f163fee3e3f44951466457331eb0804d6e97ba623cfab20b7ef52e74c5c3e437

Download Submit
C:\Users\Admin\AppData\Roaming\fcvtee.exe
Filesize
392KB

MD5
32ab5685131d8bcfa172bf165adf9338

SHA1
5e3b167bc66a15c246a8f29f7b634cbe52731319

SHA256
2a0dc11c02495205fadbbb4a5a5304a9e77fd079dcab58daa04804a59e4cc87e

SHA512
c6a48a49427a260510f08e8fd93a626445e69659c6e60364308163c92866ed43f163fee3e3f44951466457331eb0804d6e97ba623cfab20b7ef52e74c5c3e437

Download Submit
\ProgramData\mozglue.dll
Filesize
133KB

MD5
8f73c08a9660691143661bf7332c3c27

SHA1
37fa65dd737c50fda710fdbde89e51374d0c204a

SHA256
3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

SHA512
0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

Download Submit
\ProgramData\nss3.dll
Filesize
1.2MB

MD5
bfac4e3c5908856ba17d41edcd455a51

SHA1
8eec7e888767aa9e4cca8ff246eb2aacb9170428

SHA256
e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

SHA512
2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

Download Submit
\Users\Admin\AppData\LocalLow\mozglue.dll
Filesize
612KB

MD5
f07d9977430e762b563eaadc2b94bbfa

SHA1
da0a05b2b8d269fb73558dfcf0ed5c167f6d3877

SHA256
4191faf7e5eb105a0f4c5c6ed3e9e9c71014e8aa39bbee313bc92d1411e9e862

SHA512
6afd512e4099643bba3fc7700dd72744156b78b7bda10263ba1f8571d1e282133a433215a9222a7799f9824f244a2bc80c2816a62de1497017a4b26d562b7eaf

Download Submit
\Users\Admin\AppData\LocalLow\nss3.dll
Filesize
1.9MB

MD5
f67d08e8c02574cbc2f1122c53bfb976

SHA1
6522992957e7e4d074947cad63189f308a80fcf2

SHA256
c65b7afb05ee2b2687e6280594019068c3d3829182dfe8604ce4adf2116cc46e

SHA512
2e9d0a211d2b085514f181852fae6e7ca6aed4d29f396348bedb59c556e39621810a9a74671566a49e126ec73a60d0f781fa9085eb407df1eefd942c18853be5

Download Submit
\Users\Admin\AppData\LocalLow\sqlite3.dll
Filesize
1.0MB

MD5
dbf4f8dcefb8056dc6bae4b67ff810ce

SHA1
bbac1dd8a07c6069415c04b62747d794736d0689

SHA256
47b64311719000fa8c432165a0fdcdfed735d5b54977b052de915b1cbbbf9d68

SHA512
b572ca2f2e4a5cc93e4fcc7a18c0ae6df888aa4c55bc7da591e316927a4b5cfcbdda6e60018950be891ff3b26f470cc5cce34d217c2d35074322ab84c32a25d1

Download Submit
\Users\Admin\AppData\Roaming\fcvtee.exe
Filesize
392KB

MD5
32ab5685131d8bcfa172bf165adf9338

SHA1
5e3b167bc66a15c246a8f29f7b634cbe52731319

SHA256
2a0dc11c02495205fadbbb4a5a5304a9e77fd079dcab58daa04804a59e4cc87e

SHA512
c6a48a49427a260510f08e8fd93a626445e69659c6e60364308163c92866ed43f163fee3e3f44951466457331eb0804d6e97ba623cfab20b7ef52e74c5c3e437

Download Submit
\Users\Admin\AppData\Roaming\fcvtee.exe
Filesize
392KB

MD5
32ab5685131d8bcfa172bf165adf9338

SHA1
5e3b167bc66a15c246a8f29f7b634cbe52731319

SHA256
2a0dc11c02495205fadbbb4a5a5304a9e77fd079dcab58daa04804a59e4cc87e

SHA512
c6a48a49427a260510f08e8fd93a626445e69659c6e60364308163c92866ed43f163fee3e3f44951466457331eb0804d6e97ba623cfab20b7ef52e74c5c3e437

Download Submit
memory/280-59-0x0000000000000000-mapping.dmp

Download
memory/280-69-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/952-71-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/952-74-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/952-66-0x0000000000407486-mapping.dmp

Download
memory/1108-73-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1108-76-0x0000000060900000-0x0000000060992000-memory.dmp

Filesize
584KB

Download
memory/1108-70-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1108-97-0x00000000741E1000-0x00000000741E3000-memory.dmp

Filesize
8KB

Download
memory/1108-98-0x0000000073F01000-0x0000000073F03000-memory.dmp

Filesize
8KB

Download
memory/1108-100-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1108-65-0x000000000043C0B2-mapping.dmp

Download
memory/1536-101-0x0000000000000000-mapping.dmp

Download
memory/1640-68-0x00000000003E0000-0x00000000003E8000-memory.dmp

Filesize
32KB

Download
memory/1640-56-0x0000000076241000-0x0000000076243000-memory.dmp

Filesize
8KB

Download
memory/1864-99-0x0000000000000000-mapping.dmp

Download