c41899315b2f3dad512ed1f58746e59fdb2f9717badcf7b2c861c1248d945991

Analysis

max time kernel
300s
max time network
152s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
22-11-2024 03:21

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General

Target

calc.exe
Size

161KB
MD5

df543c8c85a47c41886f644f4ecf66ff
SHA1

460154b09e361829c46efcbd64848bfd1db43f53
SHA256

ef00fed6e97e926bdb3b968030795ef5dd34e8e40dec2b7cf802de97feed6321
SHA512

2a43d36b8db163de66c48d3e1db318d4ffc4aa52f2bb5e3b5074cd597cedd18be5f01b07d1afe7cb53af54c54d4e3e32e0bd0c27d2f8698459c1214b5ebfc17d
SSDEEP

3072:g4eqa10YgyW9nnrS8zut754EmUQqWKcm+cqAdZuRqoDb1Ndgjx9MApVfqF8CHJq:A5WFrbzSeE6qWK+yHuR/DfCt9vpAFrp

Score

7^/10

discovery persistence upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2468	e291pxzm.exe

Loads dropped DLL 1 IoCs

pid	Process
2552	calc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\e291pxzm.exe = "C:\\Users\\Admin\\AppData\\Roaming\\e291pxzm.exe"	calc.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral4/memory/2552-0-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral4/files/0x00050000000195c0-5.dat	upx
behavioral4/memory/2468-11-0x0000000000400000-0x0000000000437000-memory.dmp	upx

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 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	e291pxzm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	calc.exe

Modifies Internet Explorer settings 1 TTPs 3 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Internet Explorer\Main	e291pxzm.exe
Key created	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	e291pxzm.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	e291pxzm.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe
2468	e291pxzm.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2468	e291pxzm.exe
2468	e291pxzm.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2552 wrote to memory of 2468	2552	calc.exe	30
PID 2552 wrote to memory of 2468	2552	calc.exe	30
PID 2552 wrote to memory of 2468	2552	calc.exe	30
PID 2552 wrote to memory of 2468	2552	calc.exe	30

C:\Users\Admin\AppData\Local\Temp\calc.exe
"C:\Users\Admin\AppData\Local\Temp\calc.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2552
- C:\Users\Admin\AppData\Roaming\e291pxzm.exe
  "C:\Users\Admin\AppData\Roaming\e291pxzm.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:2468

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\5ku98bmsqyy4yq7x.dat

Filesize
8B

MD5
460c369195eb71d96b4118712cb40aee

SHA1
a6c45ee967cba4c94928c932891d62ad2ca5d18b

SHA256
61ea2cfad4ae728319b805f4062c997f2a558b176aad793bd23361a55a2baa21

SHA512
149e1523396a37d07905ecf4c673242fe4c55d3ef9aea4c2c63846c1eda9d7329d207eab9d494ace6bd042d50a1c6d1d03983dc620458f9d0b3a3eb06f1eb28e

Download Submit
\Users\Admin\AppData\Roaming\e291pxzm.exe

Filesize
161KB

MD5
df543c8c85a47c41886f644f4ecf66ff

SHA1
460154b09e361829c46efcbd64848bfd1db43f53

SHA256
ef00fed6e97e926bdb3b968030795ef5dd34e8e40dec2b7cf802de97feed6321

SHA512
2a43d36b8db163de66c48d3e1db318d4ffc4aa52f2bb5e3b5074cd597cedd18be5f01b07d1afe7cb53af54c54d4e3e32e0bd0c27d2f8698459c1214b5ebfc17d

Download Submit
memory/2468-11-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2468-22-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2552-1-0x0000000000020000-0x0000000000034000-memory.dmp

Filesize
80KB

Download
memory/2552-0-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2552-2-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2552-10-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download