44caliber | hxxps://disk[.]yandex[.]ru/d/5Zf-lN2SiZs0tw

Analysis

max time kernel
169s
max time network
164s
platform
windows10-2004_x64
resource
win10v2004-20220721-en
resource tags

arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
submitted
12/08/2022, 07:58

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General

Target
https://disk.yandex.ru/d/5Zf-lN2SiZs0tw
Sample220812-jt8fvsafdk

Score

10^/10

44caliber spyware stealer

Malware Config

Extracted

Family

44caliber

https://discord.com/api/webhooks/1006790440319721592/JrnMAFLUXBYu-iLZNueo-eJzGfmhsLdmdKG79qvk3RUzIgyqmlVKxvdlq1afH9ErC0VB

Signatures

44Caliber
An open source infostealer written in C#.
stealer 44caliber
Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
3152	finj.exe

Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
236	freegeoip.app
237	freegeoip.app

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2364	3116	WerFault.exe	111

Checks processor information in registry 2 TTPs 7 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	firefox.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Signature	firefox.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Revision	firefox.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~Mhz	firefox.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	firefox.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	инжектить 1 потом red5.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	инжектить 1 потом red5.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000_Classes\Local Settings	firefox.exe

NTFS ADS 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\Downloads\Новая папка.zip:Zone.Identifier	firefox.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
3416	инжектить 1 потом red5.exe
3416	инжектить 1 потом red5.exe
3416	инжектить 1 потом red5.exe
3152	finj.exe
3152	finj.exe
3152	finj.exe
3152	finj.exe
3416	инжектить 1 потом red5.exe
3472	rbxfpsunlocker.exe
3472	rbxfpsunlocker.exe
3472	rbxfpsunlocker.exe
3472	rbxfpsunlocker.exe
3472	rbxfpsunlocker.exe
3472	rbxfpsunlocker.exe
3472	rbxfpsunlocker.exe
3472	rbxfpsunlocker.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1824	firefox.exe
Token: SeDebugPrivilege	1824	firefox.exe
Token: SeDebugPrivilege	1824	firefox.exe
Token: SeDebugPrivilege	4320	(1) Red5.exe
Token: SeDebugPrivilege	3116	Manual Injector.exe
Token: SeDebugPrivilege	3416	инжектить 1 потом red5.exe

Suspicious use of FindShellTrayWindow 6 IoCs

pid	Process
1824	firefox.exe
1824	firefox.exe
1824	firefox.exe
1824	firefox.exe
4320	(1) Red5.exe
3472	rbxfpsunlocker.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
1824	firefox.exe
1824	firefox.exe
1824	firefox.exe
3472	rbxfpsunlocker.exe

Suspicious use of SetWindowsHookEx 7 IoCs

pid	Process
1824	firefox.exe
1824	firefox.exe
1824	firefox.exe
1824	firefox.exe
1824	firefox.exe
1824	firefox.exe
1824	firefox.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 4540 wrote to memory of 1824	4540	firefox.exe	83
PID 4540 wrote to memory of 1824	4540	firefox.exe	83
PID 4540 wrote to memory of 1824	4540	firefox.exe	83
PID 4540 wrote to memory of 1824	4540	firefox.exe	83
PID 4540 wrote to memory of 1824	4540	firefox.exe	83
PID 4540 wrote to memory of 1824	4540	firefox.exe	83
PID 4540 wrote to memory of 1824	4540	firefox.exe	83
PID 4540 wrote to memory of 1824	4540	firefox.exe	83
PID 4540 wrote to memory of 1824	4540	firefox.exe	83
PID 1824 wrote to memory of 1436	1824	firefox.exe	85
PID 1824 wrote to memory of 1436	1824	firefox.exe	85
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 2792	1824	firefox.exe	88
PID 1824 wrote to memory of 4692	1824	firefox.exe	89
PID 1824 wrote to memory of 4692	1824	firefox.exe	89
PID 1824 wrote to memory of 4692	1824	firefox.exe	89
PID 1824 wrote to memory of 4692	1824	firefox.exe	89
PID 1824 wrote to memory of 4692	1824	firefox.exe	89
PID 1824 wrote to memory of 4692	1824	firefox.exe	89
PID 1824 wrote to memory of 4692	1824	firefox.exe	89
PID 1824 wrote to memory of 4692	1824	firefox.exe	89
PID 1824 wrote to memory of 4692	1824	firefox.exe	89
PID 1824 wrote to memory of 4692	1824	firefox.exe	89

C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe" https://disk.yandex.ru/d/5Zf-lN2SiZs0tw
1⤵
- Suspicious use of WriteProcessMemory
PID:4540
- C:\Program Files\Mozilla Firefox\firefox.exe
  "C:\Program Files\Mozilla Firefox\firefox.exe" https://disk.yandex.ru/d/5Zf-lN2SiZs0tw
  2⤵
  - Checks processor information in registry
  - Modifies registry class
  - NTFS ADS
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1824
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="1824.0.1942048990\783538312" -parentBuildID 20200403170909 -prefsHandle 1700 -prefMapHandle 1692 -prefsLen 1 -prefMapSize 220117 -appdir "C:\Program Files\Mozilla Firefox\browser" - 1824 "\\.\pipe\gecko-crash-server-pipe.1824" 1780 gpu
    3⤵
    PID:1436
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="1824.3.1215151197\981079939" -childID 1 -isForBrowser -prefsHandle 2272 -prefMapHandle 2260 -prefsLen 78 -prefMapSize 220117 -parentBuildID 20200403170909 -appdir "C:\Program Files\Mozilla Firefox\browser" - 1824 "\\.\pipe\gecko-crash-server-pipe.1824" 2276 tab
    3⤵
    PID:2792
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="1824.13.1145890757\269770384" -childID 2 -isForBrowser -prefsHandle 3564 -prefMapHandle 3560 -prefsLen 6860 -prefMapSize 220117 -parentBuildID 20200403170909 -appdir "C:\Program Files\Mozilla Firefox\browser" - 1824 "\\.\pipe\gecko-crash-server-pipe.1824" 3620 tab
    3⤵
    PID:4692

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:4900

C:\Users\Admin\Desktop\New folder\(1) Red5.exe
"C:\Users\Admin\Desktop\New folder\(1) Red5.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:4320

C:\Users\Admin\Desktop\New folder\Manual Injector.exe
"C:\Users\Admin\Desktop\New folder\Manual Injector.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3116
- C:\Users\Admin\Desktop\New folder\finj.exe
  "C:\Users\Admin\Desktop\New folder\finj.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  PID:3152
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3116 -s 2368
  2⤵
  - Program crash
  PID:2364

C:\Users\Admin\Desktop\New folder\инжектить 1 потом red5.exe
"C:\Users\Admin\Desktop\New folder\инжектить 1 потом red5.exe"
1⤵
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3416

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3116 -ip 3116
1⤵
PID:3700

C:\Users\Admin\Desktop\New folder\rbxfpsunlocker.exe
"C:\Users\Admin\Desktop\New folder\rbxfpsunlocker.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:3472

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Web Service

T1102

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

cert9.db

Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\kfbvpzxi.default-release\cert9.db
Size 224KB
SHA256 e8db7142a85be9d2298751c6562b8bfae4be54b2788430b92f03686b09df38c7
MD5 3ee91dd3b1e233a823cb8da2996d548b
SHA1 6c16b2d4e93fcdee88051dcbad6e93864d7a65c2
SHA512 65de7c2bb8d84f1d4eb6e5d15f5c091c8e0d794100752938dbc606a6a4da92e2a9051e1a24dbd54c928fae07d177095ffbcaf1420c98696079da371daa254471
SSDEEP 192:jOFvKXzkVmvQhyn+ZoQfqlQbGhMHPaVAL23v8T7z1nexNH63U2qJ8gES1H0TSufW:6ozkVmvQhyn+ZooT7z18HQj1NldBN8b5
MD5 SHA1 SHA512 SSDEEP

Submit Download

cookies.sqlite

Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\kfbvpzxi.default-release\cookies.sqlite
Size 512KB
SHA256 17804d62f421f4f76fd3dc7a9c17e7ede31ebcd053785f9929f09c6f68b7d827
MD5 9a7083e9bff500e1e2a1f6775ddae283
SHA1 94a51a41fb5397175f329b26ac391b11dc436530
SHA512 3f739ddc3448f135d54e5dd813499aacbdbcc2ee96ec713977be6528a43fab0e325727e556a4fe51fabe7f4f7081e040bb009125c5d9d443999b5ddaffae48c8
SSDEEP 24:DQHtJl32mNVpP965hKN0MG/lS7+aAaq+9RPpzRgZU/Cdkl55rsC2SYBXmnKyGvlQ:DQfrbWT0yNgxG66mrjBYtmnv
MD5 SHA1 SHA512 SSDEEP

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places.sqlite

Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\kfbvpzxi.default-release\places.sqlite
Size 5.0MB
SHA256 d91570ae0f6e575174a977f446738a5bbbeaa712fb30e0eb4782856a478347c9
MD5 5ef437a8768948fd533b3ef7241d5880
SHA1 8e1b88b833f027ada41a81f3ae578fcf08a8e247
SHA512 0d4c9e74828ead8e99277cc178ae5b70384aad465b177fee5df393bb03de29d200ba7d9eb1c5cfebc28578f9f4f41989ba3ff8ea104cabf6c1062760850a5321
SSDEEP 192:gUYjcoBMcygNd1aynkL7Tf/B3T3NAWtO5:rYTBMcygNd2fTnVjnt
MD5 SHA1 SHA512 SSDEEP

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finj.exe

Path C:\Users\Admin\Desktop\New folder\finj.exe
Size 6.2MB
SHA256 e3f179be93e4633c932051ade43875f583313687dc6142ca8619da442bbf1cfa
MD5 9a5954f7325498ad64b7075f9877dd4e
SHA1 3bc8fd9cd93392244ee5f8f9c5f5cfb92b7e9906
SHA512 a6ed0e46d51361850cdc3faa52755628714f89d9885ccfb7f6cabfb52a36b0f0cc186f864b9d101bf368cd6c2386923b6702b7edd5e74bc2de272f14329193aa
SSDEEP 98304:XAwXRce7rKH1tKWRQzsjFqEdH2Vt3zOcTBSVgEeo11K6rJYnE5Mw3TZQrixJxSrH:QwXRc6K/bRQAjEEt2V/VEeOJF3Tpwr7
MD5 SHA1 SHA512 SSDEEP

Submit Download

finj.exe

Path C:\Users\Admin\Desktop\New folder\finj.exe
Size 6.2MB
SHA256 e3f179be93e4633c932051ade43875f583313687dc6142ca8619da442bbf1cfa
MD5 9a5954f7325498ad64b7075f9877dd4e
SHA1 3bc8fd9cd93392244ee5f8f9c5f5cfb92b7e9906
SHA512 a6ed0e46d51361850cdc3faa52755628714f89d9885ccfb7f6cabfb52a36b0f0cc186f864b9d101bf368cd6c2386923b6702b7edd5e74bc2de272f14329193aa
SSDEEP 98304:XAwXRce7rKH1tKWRQzsjFqEdH2Vt3zOcTBSVgEeo11K6rJYnE5Mw3TZQrixJxSrH:QwXRc6K/bRQAjEEt2V/VEeOJF3Tpwr7
MD5 SHA1 SHA512 SSDEEP

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memory/3116-137-0x00000000002F0000-0x00000000002F8000-memory.dmp

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memory/3116-138-0x0000000004C90000-0x0000000004D2E000-memory.dmp

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memory/3116-139-0x0000000007090000-0x00000000070B2000-memory.dmp

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memory/3152-151-0x0000000000B90000-0x0000000001533000-memory.dmp

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memory/3152-150-0x0000000000B90000-0x0000000001533000-memory.dmp

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memory/3152-148-0x0000000000B90000-0x0000000001533000-memory.dmp

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memory/3416-140-0x000001C43B0C0000-0x000001C43B10A000-memory.dmp

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memory/3416-147-0x00007FFCF3070000-0x00007FFCF3B31000-memory.dmp

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memory/3416-152-0x00007FFCF3070000-0x00007FFCF3B31000-memory.dmp

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memory/3416-153-0x00007FFCF3070000-0x00007FFCF3B31000-memory.dmp

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memory/4320-130-0x0000000000680000-0x00000000006D0000-memory.dmp

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memory/4320-136-0x0000000007020000-0x000000000707A000-memory.dmp

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memory/4320-135-0x0000000006FA0000-0x0000000006FB4000-memory.dmp

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memory/4320-134-0x0000000005350000-0x000000000535A000-memory.dmp

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memory/4320-133-0x0000000005360000-0x00000000053F2000-memory.dmp

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memory/4320-132-0x000000000A100000-0x000000000A6A4000-memory.dmp

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memory/4320-131-0x00000000096B0000-0x0000000009746000-memory.dmp

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