MALICIOUS — a3286fe12c112fcdbeb7bbeeb63a9cfb8e5be3b21eb6ba363600422914d0f7d3

MALICIOUS — a3286fe12c112fcdbeb7bbeeb63a9cfb8e5be3b21eb6ba363600422914d0f7d3 is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (100/100), attributed to the CryptInject family. 6 of 56 detection engines flagged it, exhibiting 5 ATT&CK techniques.

Identification

SHA-256: a3286fe12c112fcdbeb7bbeeb63a9cfb8e5be3b21eb6ba363600422914d0f7d3
SHA-1: 479713b323205a1a079d1ca51498f7a5bd8f26f2
MD5: 3600c33f5a5cdca6b8ee8930ceea2065
imphash: 4a9f18b13c7a6967f6a107bb6b30f66f
ssdeep: 12288:hxiR5e8HmV0flUmYfcSEQo7zXefX7mCEJcZhXxVW23lA27B8Vn6nfk:TiXe8+0tUPcSe7zXeDJZhhLxgOk
TLSH: T1945227B554CA9321C33A98B9EC07693E441628C432ACFCFA443F550D77E6A53EE814AD
Submitted as: a3286fe12c112fcdbeb7bbeeb63a9cfb8e5be3b21eb6ba363600422914d0f7d3
File type: pe · Size: 948728 bytes
Verdict: malicious (100/100) · Family: CryptInject

Detections (6 of 56 engines)

capa (capabilities): capability:collection/keylog
YARA: JPCERT/CC: JPCERT_HUILoader_PlugX_SideLoad
LIEF (executable format parser): lief:invalid-authenticode
Microsoft Defender: Trojan:Win32/CryptInject!MSR
Emsisoft (Emergency Kit): Gen:Variant.Lazy.16779
Kaspersky (KVRT): UDS:Trojan.Win32.SelfDel.iwxd

MITRE ATT&CK

Why this verdict

The malicious score of 100/100 is the fusion of 14 weighted signals:

2 behavioral detection(s) across 2 rule(s): Credential Access: browser credential store read [high] (rule tl-browser-credential-access) - dynamic signal, weight 0.63, confidence 0.90
Microsoft Defender flagged Trojan:Win32/CryptInject!MSR (rule Trojan:Win32/CryptInject!MSR) - engine signal, weight 0.55, confidence 0.85
Emsisoft (Emergency Kit) flagged Gen:Variant.Lazy.16779 (rule Gen:Variant.Lazy.16779) - engine signal, weight 0.55, confidence 0.85
Kaspersky (KVRT) flagged UDS:Trojan.Win32.SelfDel.iwxd (rule UDS:Trojan.Win32.SelfDel.iwxd) - engine signal, weight 0.55, confidence 0.85
YARA: JPCERT/CC flagged JPCERT_HUILoader_PlugX_SideLoad (rule JPCERT_HUILoader_PlugX_SideLoad) - engine signal, weight 0.60, confidence 0.70
capture keystrokes (rule capture keystrokes) - capa signal, weight 0.40, confidence 0.80
Contacted 2 external host(s) and 3 HTTP request(s) at runtime - network signal, weight 0.40, confidence 0.80
Anti-analysis: T1082, T1497.001 - dynamic signal, weight 0.40, confidence 0.75
Extracted CryptBot config (0 C2) - engine signal, weight 0.45, confidence 0.60
LIEF (executable format parser) flagged lief:invalid-authenticode (rule lief:invalid-authenticode) - engine signal, weight 0.35, confidence 0.70
capa (capabilities) flagged capability:collection/keylog (rule capability:collection/keylog) - engine signal, weight 0.35, confidence 0.70
communicate over HTTP (rule communicate over HTTP) - capa signal, weight 0.30, confidence 0.60
Observed at runtime: Modify Registry (T1112) (rule Modify Registry) - dynamic signal, weight 0.12, confidence 0.90
Memory forensics: 3 finding(s) elsewhere in the guest, not attributed to this sample, e.g. process hidden from a listing (rule windows.psxview.PsXView) - memory signal, weight 0.05, confidence 0.30

Dynamic analysis (windows)

35186 behavior events · 1 ATT&CK techniques · 4 dropped files.

Dropped files

C:\Users\analyst\AppData\Local\Temp\udfxrGDbfoVg\files_\screenshot.jpg - ee87521c9ddf26536ee5ccba19bf927c05c5a45ee7219c33962b092f906549b5
C:\Users\analyst\AppData\Local\Temp\udfxrGDbfoVg\files_\system_info.txt - e4bd184f872cad91532054fcdfdbde5314a22e1011297f9d85af4b68896cecbb
f1345302ebf6e0e718878202143e517ddd23fd87ee0a8b264a50b44623fa4e07 - f1345302ebf6e0e718878202143e517ddd23fd87ee0a8b264a50b44623fa4e07
7f92de80b227bd85f850529633a97a457c0123eb30ecdd3babd5f50e976d2b34 - 7f92de80b227bd85f850529633a97a457c0123eb30ecdd3babd5f50e976d2b34

Embedded URLs

https://www.digicert.com/CPS0
http://cacerts.digicert.com/DigiCertEVCodeSigningCA-SHA2.crt0
http://cacerts.digicert.com/DigiCertHighAssuranceEVRootCA.crt0
http://crl3.digicert.com/DigiCertHighAssuranceEVRootCA.crl0@
http://crl4.digicert.com/DigiCertHighAssuranceEVRootCA.crl0
http://www.digicert.com/ssl-cps-repository.htm0
http://www.msftconnecttest.com/connecttest.txt
http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
http://rb.symcb.com/rb.crl

Embedded domains

crl3.digicert.com
crl4.digicert.com
www.digicert.com
cacerts.digicert.com
aefd.nelreports.net

Embedded IP addresses

20.42.73.25
52.253.84.76
4.230.171.124
104.18.33.89
172.66.2.5
52.110.12.33
172.178.240.162
52.110.12.3
20.52.64.200
52.110.12.37
52.110.12.8

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report