8faa72093f10d253f67ffc2b4589bb5b2baade75729e5887a52ccc75aae50619

Analysis

max time kernel
38s
max time network
45s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
20-10-2022 12:20

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General

Target

ͨCFCAؼ v3.4.0.4/CryptoKit.AmericanExpress.x64.exe
Size

747KB
MD5

fe48508635c0f38d53acf80713ecf463
SHA1

3697f5d2a0f7a8e8dbc71b21e52f3676de2ac8f8
SHA256

d9fe28b4399aafc7c5c666d066bbbf9d56ac62197884c348bcbab6bb57cb8896
SHA512

5e2804c139d8e80177fb9f9e6f804f7bdd8afffd251abe994d4de6430a413d7805dc57287bbdf7733f411a4a224c067ee838ad2dbadf2f0844c2b9572ee04e32
SSDEEP

12288:3zZ4UjD5HOMZUpS2lmLrt06x6tKPIh8cR6Sr67idYHUZ6d25PlJKkBy5Y+Z:3zZfOMZUpRmLrt06YtKPIh8M3r67lS6P

Score

8^/10

discovery persistence

Malware Config

Signatures

Registers COM server for autorun 1 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{46B713A2-C992-4AE7-A56C-0A935CBF238E}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{46B713A2-C992-4AE7-A56C-0A935CBF238E}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{46B713A2-C992-4AE7-A56C-0A935CBF238E}\InprocServer32\ = "C:\\Windows\\system32\\CryptoKit.AmericanExpress.x64.dll"	regsvr32.exe

Loads dropped DLL 2 IoCs

pid	Process
1416	CryptoKit.AmericanExpress.x64.exe
1592	regsvr32.exe

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

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\system32\CryptoKit.AmericanExpress.x64.dll	CryptoKit.AmericanExpress.x64.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\CFCA\CryptoKit.AmericanExpress.x64\uninst.exe	CryptoKit.AmericanExpress.x64.exe

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

System Information Discovery
T1082

Modifies registry class 46 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CryptoKit.CryptoAgent.1\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{F3F42EA7-1E7A-4AFE-8C5D-F5A8D372B8DB}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CryptoKit.CryptoAgent\CurVer	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{46B713A2-C992-4AE7-A56C-0A935CBF238E}\ = "CryptoAgent Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{012863A9-0C22-49B9-BAEF-C5C33C0D4459}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{012863A9-0C22-49B9-BAEF-C5C33C0D4459}\1.0\ = "CryptoKit.AmericanExpress.x64 3.0 Type Library"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{012863A9-0C22-49B9-BAEF-C5C33C0D4459}\1.0\FLAGS\ = "0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{012863A9-0C22-49B9-BAEF-C5C33C0D4459}\1.0\HELPDIR\ = "C:\\Windows\\system32"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F3F42EA7-1E7A-4AFE-8C5D-F5A8D372B8DB}\ = "ICryptoAgent"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F3F42EA7-1E7A-4AFE-8C5D-F5A8D372B8DB}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CryptoKit.CryptoAgent.1	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CryptoKit.CryptoAgent\ = "CryptoAgent Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{46B713A2-C992-4AE7-A56C-0A935CBF238E}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{46B713A2-C992-4AE7-A56C-0A935CBF238E}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{012863A9-0C22-49B9-BAEF-C5C33C0D4459}\1.0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{012863A9-0C22-49B9-BAEF-C5C33C0D4459}\1.0\0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F3F42EA7-1E7A-4AFE-8C5D-F5A8D372B8DB}\TypeLib\ = "{012863A9-0C22-49B9-BAEF-C5C33C0D4459}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F3F42EA7-1E7A-4AFE-8C5D-F5A8D372B8DB}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{F3F42EA7-1E7A-4AFE-8C5D-F5A8D372B8DB}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{F3F42EA7-1E7A-4AFE-8C5D-F5A8D372B8DB}\TypeLib\ = "{012863A9-0C22-49B9-BAEF-C5C33C0D4459}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F3F42EA7-1E7A-4AFE-8C5D-F5A8D372B8DB}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{F3F42EA7-1E7A-4AFE-8C5D-F5A8D372B8DB}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CryptoKit.CryptoAgent.1\CLSID\ = "{46B713A2-C992-4AE7-A56C-0A935CBF238E}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{46B713A2-C992-4AE7-A56C-0A935CBF238E}\VersionIndependentProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{46B713A2-C992-4AE7-A56C-0A935CBF238E}\VersionIndependentProgID\ = "CryptoKit.CryptoAgent"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{012863A9-0C22-49B9-BAEF-C5C33C0D4459}\1.0\FLAGS	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{012863A9-0C22-49B9-BAEF-C5C33C0D4459}\1.0\0\win64\ = "C:\\Windows\\system32\\CryptoKit.AmericanExpress.x64.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F3F42EA7-1E7A-4AFE-8C5D-F5A8D372B8DB}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CryptoKit.CryptoAgent\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{46B713A2-C992-4AE7-A56C-0A935CBF238E}\ProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{012863A9-0C22-49B9-BAEF-C5C33C0D4459}\1.0\HELPDIR	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CryptoKit.CryptoAgent	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{46B713A2-C992-4AE7-A56C-0A935CBF238E}\InprocServer32\ = "C:\\Windows\\system32\\CryptoKit.AmericanExpress.x64.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{46B713A2-C992-4AE7-A56C-0A935CBF238E}\TypeLib\ = "{012863A9-0C22-49B9-BAEF-C5C33C0D4459}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{012863A9-0C22-49B9-BAEF-C5C33C0D4459}\1.0\0\win64	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{F3F42EA7-1E7A-4AFE-8C5D-F5A8D372B8DB}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{F3F42EA7-1E7A-4AFE-8C5D-F5A8D372B8DB}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CryptoKit.CryptoAgent\CLSID\ = "{46B713A2-C992-4AE7-A56C-0A935CBF238E}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CryptoKit.CryptoAgent\CurVer\ = "CryptoKit.CryptoAgent.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{46B713A2-C992-4AE7-A56C-0A935CBF238E}\ProgID\ = "CryptoKit.CryptoAgent.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{46B713A2-C992-4AE7-A56C-0A935CBF238E}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{46B713A2-C992-4AE7-A56C-0A935CBF238E}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F3F42EA7-1E7A-4AFE-8C5D-F5A8D372B8DB}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CryptoKit.CryptoAgent.1\ = "CryptoAgent Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{46B713A2-C992-4AE7-A56C-0A935CBF238E}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{F3F42EA7-1E7A-4AFE-8C5D-F5A8D372B8DB}\ = "ICryptoAgent"	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1416 wrote to memory of 1592	1416	CryptoKit.AmericanExpress.x64.exe	26
PID 1416 wrote to memory of 1592	1416	CryptoKit.AmericanExpress.x64.exe	26
PID 1416 wrote to memory of 1592	1416	CryptoKit.AmericanExpress.x64.exe	26
PID 1416 wrote to memory of 1592	1416	CryptoKit.AmericanExpress.x64.exe	26
PID 1416 wrote to memory of 1592	1416	CryptoKit.AmericanExpress.x64.exe	26
PID 1416 wrote to memory of 1592	1416	CryptoKit.AmericanExpress.x64.exe	26
PID 1416 wrote to memory of 1592	1416	CryptoKit.AmericanExpress.x64.exe	26

C:\Users\Admin\AppData\Local\Temp\ͨCFCAؼ v3.4.0.4\CryptoKit.AmericanExpress.x64.exe
"C:\Users\Admin\AppData\Local\Temp\ͨCFCAؼ v3.4.0.4\CryptoKit.AmericanExpress.x64.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1416
- C:\Windows\system32\regsvr32.exe
  "regsvr32.exe" "C:\Windows\system32\CryptoKit.AmericanExpress.x64.dll" /s
  2⤵
  - Registers COM server for autorun
  - Loads dropped DLL
  - Modifies registry class
  PID:1592

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\system32\CryptoKit.AmericanExpress.x64.dll

Filesize
1.4MB

MD5
c8b24d96f964062635de3b322fddf246

SHA1
d9f984a22273d4a7c4b2a8d5f14210683b44a9be

SHA256
a25b6c064dda554064f6217aca87083fd27d8f54e40dd27dfeaa7b251cc93665

SHA512
d5febcdcece0501f7ccdf882a31196c1915c813e5b0175a123b69aa2ceb4d73706abdf4720ad5ac63e906b41582b28aee3f24ec6218b633dc0de840127b59c32

Download Submit
\Users\Admin\AppData\Local\Temp\nsd59A6.tmp\System.dll

Filesize
11KB

MD5
959ea64598b9a3e494c00e8fa793be7e

SHA1
40f284a3b92c2f04b1038def79579d4b3d066ee0

SHA256
03cd57ab00236c753e7ddeee8ee1c10839ace7c426769982365531042e1f6f8b

SHA512
5e765e090f712beffce40c5264674f430b08719940d66e3a4d4a516fd4ade859f7853f614d9d6bbb602780de54e11110d66dbb0f9ca20ef6096ede531f9f6d64

Download Submit
\Windows\System32\CryptoKit.AmericanExpress.x64.dll

Filesize
1.4MB

MD5
c8b24d96f964062635de3b322fddf246

SHA1
d9f984a22273d4a7c4b2a8d5f14210683b44a9be

SHA256
a25b6c064dda554064f6217aca87083fd27d8f54e40dd27dfeaa7b251cc93665

SHA512
d5febcdcece0501f7ccdf882a31196c1915c813e5b0175a123b69aa2ceb4d73706abdf4720ad5ac63e906b41582b28aee3f24ec6218b633dc0de840127b59c32

Download Submit
memory/1416-54-0x0000000075E81000-0x0000000075E83000-memory.dmp

Filesize
8KB

Download
memory/1592-57-0x000007FEFB9F1000-0x000007FEFB9F3000-memory.dmp

Filesize
8KB

Download