chaos | b24d58cd8d600431702b67fb815a92f465147553303c0f8a1867af77214dba75

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20250207-en
resource tags

arch:x64arch:x86image:win10v2004-20250207-enlocale:en-usos:windows10-2004-x64system
submitted
09-02-2025 16:23

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General

Target

Yashma ransomware builder v1.2.exe
Size

825KB
MD5

5120e2ada300c2eef255957dde5b84b0
SHA1

dfb5c0b29fb235d34e851de234535474705be356
SHA256

b24d58cd8d600431702b67fb815a92f465147553303c0f8a1867af77214dba75
SHA512

958f089a7060188213dd00f6d73bbd625a89f98ccc0b5bf7b5963a3ef40677846e03a33866b79cec92fd29709ff8f0bd9a753397ef07f25779aedb02884d9f8c
SSDEEP

6144:aMPUfX5X2onFLfFLzFL6FL6aGMVFLQ+FWD/:aLJX8QD

Score

10^/10

chaos discovery ransomware

Malware Config

Signatures

Chaos
Ransomware family first seen in June 2021.
ransomware chaos

Chaos Ransomware 1 IoCs

resource	yara_rule
behavioral2/memory/4920-1-0x0000028312AE0000-0x0000028312BB4000-memory.dmp	family_chaos

Chaos family
chaos

Downloads MZ/PE file 2 IoCs

flow	pid	Process
48	4812	Process not Found
36	2464	Process not Found

System Location Discovery: System Language Discovery 1 TTPs 1 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

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

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
1860	MicrosoftEdgeUpdate.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
4920	Yashma ransomware builder v1.2.exe
4920	Yashma ransomware builder v1.2.exe
4920	Yashma ransomware builder v1.2.exe
4920	Yashma ransomware builder v1.2.exe
4920	Yashma ransomware builder v1.2.exe
4920	Yashma ransomware builder v1.2.exe
4920	Yashma ransomware builder v1.2.exe
4920	Yashma ransomware builder v1.2.exe
4920	Yashma ransomware builder v1.2.exe
4920	Yashma ransomware builder v1.2.exe
4920	Yashma ransomware builder v1.2.exe
4920	Yashma ransomware builder v1.2.exe
4920	Yashma ransomware builder v1.2.exe
4920	Yashma ransomware builder v1.2.exe
4920	Yashma ransomware builder v1.2.exe
4920	Yashma ransomware builder v1.2.exe
4920	Yashma ransomware builder v1.2.exe
4920	Yashma ransomware builder v1.2.exe
4920	Yashma ransomware builder v1.2.exe
4920	Yashma ransomware builder v1.2.exe
4920	Yashma ransomware builder v1.2.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4920	Yashma ransomware builder v1.2.exe

C:\Users\Admin\AppData\Local\Temp\Yashma ransomware builder v1.2.exe
"C:\Users\Admin\AppData\Local\Temp\Yashma ransomware builder v1.2.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4920

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIxIiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDY4MzAiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxOTE0Njg3NjAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1MDEwNzU5MTY3Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:1860

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4920-0-0x00007FFB445F3000-0x00007FFB445F5000-memory.dmp

Filesize
8KB

Download
memory/4920-1-0x0000028312AE0000-0x0000028312BB4000-memory.dmp

Filesize
848KB

Download
memory/4920-2-0x00007FFB445F0000-0x00007FFB450B1000-memory.dmp

Filesize
10.8MB

Download
memory/4920-3-0x00007FFB445F0000-0x00007FFB450B1000-memory.dmp

Filesize
10.8MB

Download
memory/4920-4-0x00007FFB445F3000-0x00007FFB445F5000-memory.dmp

Filesize
8KB

Download
memory/4920-5-0x00007FFB445F0000-0x00007FFB450B1000-memory.dmp

Filesize
10.8MB

Download