General

  • Target

    037bf2f69da15246646203c0a7bcbf602136b02f61601df3a5dd8ce1e8da65c0

  • Size

    556KB

  • Sample

    221127-jssc9abb56

  • MD5

    55113c969cc06b001416248a5fa292e4

  • SHA1

    9046e539b20407a00237f07eab571e21cc1896b8

  • SHA256

    037bf2f69da15246646203c0a7bcbf602136b02f61601df3a5dd8ce1e8da65c0

  • SHA512

    5252afc3886b09d55139de6d298230f4c2c45deddc8824373364947de510ce45cf6e37d0eb9802f3d5c5587a3a4e03730d780c1a0906f98854c77167ca981089

  • SSDEEP

    12288:J7Lo8Rs90X41cnOOWB2KpyYK4BVqZDx2mpmHPW9GROsI8w:J7L1yMgcnOds44Fp2PWUDI8

Malware Config

Targets

    • Target

      037bf2f69da15246646203c0a7bcbf602136b02f61601df3a5dd8ce1e8da65c0

    • Size

      556KB

    • MD5

      55113c969cc06b001416248a5fa292e4

    • SHA1

      9046e539b20407a00237f07eab571e21cc1896b8

    • SHA256

      037bf2f69da15246646203c0a7bcbf602136b02f61601df3a5dd8ce1e8da65c0

    • SHA512

      5252afc3886b09d55139de6d298230f4c2c45deddc8824373364947de510ce45cf6e37d0eb9802f3d5c5587a3a4e03730d780c1a0906f98854c77167ca981089

    • SSDEEP

      12288:J7Lo8Rs90X41cnOOWB2KpyYK4BVqZDx2mpmHPW9GROsI8w:J7L1yMgcnOds44Fp2PWUDI8

    • Modifies WinLogon for persistence

    • Modifies visiblity of hidden/system files in Explorer

    • Executes dropped EXE

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Deletes itself

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Unexpected DNS network traffic destination

      Network traffic to other servers than the configured DNS servers was detected on the DNS port.

    • Adds Run key to start application

    • Maps connected drives based on registry

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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Winlogon Helper DLL

1
T1004

Hidden Files and Directories

1
T1158

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

3
T1112

Hidden Files and Directories

1
T1158

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

Process Discovery

1
T1057

Collection

Data from Local System

1
T1005

Tasks