7eb5bc82cf707f1397cd3fcd2ae112356836e0c996c16b79bfe60f561192b167

General

Target

74e81b54a7d03c8725673906498c5cb0_NEAS.exe
Size

2.0MB
MD5

74e81b54a7d03c8725673906498c5cb0
SHA1

4de7d8ed3e1cfb6d4b65551d752c9403ff22c7db
SHA256

7eb5bc82cf707f1397cd3fcd2ae112356836e0c996c16b79bfe60f561192b167
SHA512

266631f953599541e4c90891ac3dc8727d5e52ef377e6a0aeb244852f34e99b47e9ee91f61229edb83123aad47b68e29f0673c392d4672afcdfa366e83e50b91
SSDEEP

49152:OFUcx88PWPOpX0SFK2oYR00PYWMCtKGNZBNczKCl8yGc:O+K88uPCHf00P/MoKGFNuF8yGc

Score

7^/10

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3411335054-1982420046-2118495756-1000\Control Panel\International\Geo\Nation	321C.tmp

Executes dropped EXE 1 IoCs

pid	Process
3928	321C.tmp

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 3 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WINWORD.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WINWORD.EXE

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3411335054-1982420046-2118495756-1000_Classes\Local Settings	321C.tmp

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
2288	WINWORD.EXE
2288	WINWORD.EXE

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
3928	321C.tmp

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
2288	WINWORD.EXE
2288	WINWORD.EXE
2288	WINWORD.EXE
2288	WINWORD.EXE
2288	WINWORD.EXE
2288	WINWORD.EXE
2288	WINWORD.EXE
2288	WINWORD.EXE
2288	WINWORD.EXE
2288	WINWORD.EXE

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4332 wrote to memory of 3928	4332	74e81b54a7d03c8725673906498c5cb0_NEAS.exe	84
PID 4332 wrote to memory of 3928	4332	74e81b54a7d03c8725673906498c5cb0_NEAS.exe	84
PID 4332 wrote to memory of 3928	4332	74e81b54a7d03c8725673906498c5cb0_NEAS.exe	84
PID 3928 wrote to memory of 2288	3928	321C.tmp	92
PID 3928 wrote to memory of 2288	3928	321C.tmp	92

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012
Uses Volume Shadow Copy WMI provider
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\74e81b54a7d03c8725673906498c5cb0_NEAS.exe
"C:\Users\Admin\AppData\Local\Temp\74e81b54a7d03c8725673906498c5cb0_NEAS.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4332
- C:\Users\Admin\AppData\Local\Temp\321C.tmp
  "C:\Users\Admin\AppData\Local\Temp\321C.tmp" --splashC:\Users\Admin\AppData\Local\Temp\74e81b54a7d03c8725673906498c5cb0_NEAS.exe 1AA3BB598FC19B0BC89F4E8F49962FDDDBCA5915B309D14154C3BF2D79628FD8584ECECDE0B8750280DF38C07D9205305FF51355604D67D6F54D69B29071189C
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Modifies registry class
  - Suspicious behavior: RenamesItself
  - Suspicious use of WriteProcessMemory
  PID:3928
- - C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\74e81b54a7d03c8725673906498c5cb0_NEAS.docx" /o ""
    3⤵
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious behavior: AddClipboardFormatListener
    - Suspicious use of SetWindowsHookEx
    PID:2288

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

4

T1012

System Information Discovery

4

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\321C.tmp

Filesize
2.0MB

MD5
52d18b0450718675f4b1558876ed66f8

SHA1
e2a5c1f12558e88f42784f48ae7da7eeb6d47ad4

SHA256
0c6b953f803a38cff53764fab7df20732088e12c34e1b2f5e5c4472c488236b9

SHA512
36e2c6cd8860a5964a257386b0f9d0b2d3d78029518cf24f844470941b5e9360431c66460061ab0cb5659b51162a831f6b058c1b80cf9122f517e622d1a4f72e

Download Submit
C:\Users\Admin\AppData\Local\Temp\74e81b54a7d03c8725673906498c5cb0_NEAS.docx

Filesize
19KB

MD5
4046ff080673cffac6529512b8d3bdbb

SHA1
d3cbc39065b7a55e995fa25397da2140bdac80c1

SHA256
f0c1b360c0b24b5450a79138650e6ee254afae6ce8f6c68da7d1f32f91582680

SHA512
453f70730b7560e3d3e23ddfa0fe74e014753f8b34b45254c1c0cf5fec0546a2b8b109a4f9d096e91711b6d02cb383a7136c2cb7bd6600d0598acf7c90c25418

Download Submit
memory/2288-18-0x00007FFDF1DF0000-0x00007FFDF1FE5000-memory.dmp

Filesize
2.0MB

Download
memory/2288-31-0x00007FFDAF820000-0x00007FFDAF830000-memory.dmp

Filesize
64KB

Download
memory/2288-11-0x00007FFDB1E70000-0x00007FFDB1E80000-memory.dmp

Filesize
64KB

Download
memory/2288-13-0x00007FFDB1E70000-0x00007FFDB1E80000-memory.dmp

Filesize
64KB

Download
memory/2288-14-0x00007FFDB1E70000-0x00007FFDB1E80000-memory.dmp

Filesize
64KB

Download
memory/2288-12-0x00007FFDB1E70000-0x00007FFDB1E80000-memory.dmp

Filesize
64KB

Download
memory/2288-15-0x00007FFDF1E8D000-0x00007FFDF1E8E000-memory.dmp

Filesize
4KB

Download
memory/2288-16-0x00007FFDB1E70000-0x00007FFDB1E80000-memory.dmp

Filesize
64KB

Download
memory/2288-17-0x00007FFDF1DF0000-0x00007FFDF1FE5000-memory.dmp

Filesize
2.0MB

Download
memory/2288-19-0x00007FFDF1DF0000-0x00007FFDF1FE5000-memory.dmp

Filesize
2.0MB

Download
memory/2288-48-0x00007FFDF1DF0000-0x00007FFDF1FE5000-memory.dmp

Filesize
2.0MB

Download
memory/2288-20-0x00007FFDF1DF0000-0x00007FFDF1FE5000-memory.dmp

Filesize
2.0MB

Download
memory/2288-22-0x00007FFDF1DF0000-0x00007FFDF1FE5000-memory.dmp

Filesize
2.0MB

Download
memory/2288-26-0x00007FFDF1DF0000-0x00007FFDF1FE5000-memory.dmp

Filesize
2.0MB

Download
memory/2288-21-0x00007FFDF1DF0000-0x00007FFDF1FE5000-memory.dmp

Filesize
2.0MB

Download
memory/2288-25-0x00007FFDF1DF0000-0x00007FFDF1FE5000-memory.dmp

Filesize
2.0MB

Download
memory/2288-29-0x00007FFDAF820000-0x00007FFDAF830000-memory.dmp

Filesize
64KB

Download
memory/2288-28-0x00007FFDF1DF0000-0x00007FFDF1FE5000-memory.dmp

Filesize
2.0MB

Download
memory/2288-27-0x00007FFDF1DF0000-0x00007FFDF1FE5000-memory.dmp

Filesize
2.0MB

Download
memory/2288-23-0x00007FFDF1DF0000-0x00007FFDF1FE5000-memory.dmp

Filesize
2.0MB

Download
memory/2288-30-0x00007FFDF1DF0000-0x00007FFDF1FE5000-memory.dmp

Filesize
2.0MB

Download
memory/2288-24-0x00007FFDF1DF0000-0x00007FFDF1FE5000-memory.dmp

Filesize
2.0MB

Download
memory/2288-32-0x00007FFDF1DF0000-0x00007FFDF1FE5000-memory.dmp

Filesize
2.0MB

Download
memory/3928-5-0x0000000000400000-0x0000000000606000-memory.dmp

Filesize
2.0MB

Download
memory/4332-0-0x0000000000400000-0x0000000000606000-memory.dmp

Filesize
2.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads