chaos | f2665f89ba53abd3deb81988c0d5194992214053e77fc89b98b64a31a7504d77

General

Target

Chaos Ransomware Builder v4.exe
Size

550KB
MD5

8b855e56e41a6e10d28522a20c1e0341
SHA1

17ea75272cfe3749c6727388fd444d2c970f9d01
SHA256

f2665f89ba53abd3deb81988c0d5194992214053e77fc89b98b64a31a7504d77
SHA512

eefab442b9c1be379e00c6a7de9d6d7d327ad8fd52d62a5744e104f6caa44f7147a8e74f340870f9c017980a3d8a5a86a05f76434539c01270c442a66b2af908
SSDEEP

3072:9UJAYdi2YcRVm16Pn6tpzqJG/sX9i2YcRPm16Pn6ckCjSH5EyR9aKZt18rTu+i2S:9aiWm162qJEsNiym16ryAiym168

Score

10^/10

chaos ransomware

Malware Config

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 1 IoCs

resource	yara_rule
behavioral1/memory/1900-1-0x0000000001220000-0x00000000012AE000-memory.dmp	family_chaos

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

System Information Discovery
T1082

Modifies registry class 20 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	Chaos Ransomware Builder v4.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	Chaos Ransomware Builder v4.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags	Chaos Ransomware Builder v4.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	Chaos Ransomware Builder v4.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	Chaos Ransomware Builder v4.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02	Chaos Ransomware Builder v4.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = ffffffff	Chaos Ransomware Builder v4.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg	Chaos Ransomware Builder v4.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1	Chaos Ransomware Builder v4.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0	Chaos Ransomware Builder v4.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\TV_FolderType = "{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}"	Chaos Ransomware Builder v4.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\NodeSlot = "1"	Chaos Ransomware Builder v4.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\TV_TopViewID = "{82BA0782-5B7A-4569-B5D7-EC83085F08CC}"	Chaos Ransomware Builder v4.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_Classes\Local Settings	Chaos Ransomware Builder v4.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f4225481e03947bc34db131e946b44c8dd50000	Chaos Ransomware Builder v4.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff	Chaos Ransomware Builder v4.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 9e0000001a00eebbfe23000010007db10d7bd29c934a973346cc89022e7c00002a0000000000efbe000000200000000000000000000000000000000000000000000000000100000020002a0000000000efbe7e47b3fbe4c93b4ba2bad3f5d3cd46f98207ba827a5b6945b5d7ec83085f08cc20002a0000000000efbe000000200000000000000000000000000000000000000000000000000100000020000000	Chaos Ransomware Builder v4.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0	Chaos Ransomware Builder v4.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff	Chaos Ransomware Builder v4.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\TV_TopViewVersion = "0"	Chaos Ransomware Builder v4.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1900	Chaos Ransomware Builder v4.exe
1900	Chaos Ransomware Builder v4.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1900	Chaos Ransomware Builder v4.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1900	Chaos Ransomware Builder v4.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1900	Chaos Ransomware Builder v4.exe

C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe
"C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe"
1⤵
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1900

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1900-0-0x000007FEF5863000-0x000007FEF5864000-memory.dmp

Filesize
4KB

Download
memory/1900-1-0x0000000001220000-0x00000000012AE000-memory.dmp

Filesize
568KB

Download
memory/1900-2-0x000007FEF5860000-0x000007FEF624C000-memory.dmp

Filesize
9.9MB

Download
memory/1900-3-0x000007FEF5860000-0x000007FEF624C000-memory.dmp

Filesize
9.9MB

Download
memory/1900-4-0x000007FEF5863000-0x000007FEF5864000-memory.dmp

Filesize
4KB

Download
memory/1900-5-0x000007FEF5860000-0x000007FEF624C000-memory.dmp

Filesize
9.9MB

Download
memory/1900-6-0x000007FEF5860000-0x000007FEF624C000-memory.dmp

Filesize
9.9MB

Download
memory/1900-7-0x000007FEF5860000-0x000007FEF624C000-memory.dmp

Filesize
9.9MB

Download
memory/1900-8-0x000000001EEF0000-0x000000001EF00000-memory.dmp

Filesize
64KB

Download
memory/1900-9-0x000007FEF5860000-0x000007FEF624C000-memory.dmp

Filesize
9.9MB

Download

Analysis

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