122647b0e0d506d90083df1b85b045bcdfe2865b7ed56f5841bf3923cb053686

General

Target

2d6f723b9839621479baf29358634f10N.exe
Size

515KB
MD5

2d6f723b9839621479baf29358634f10
SHA1

387a9f2845133a53a40a9db143b7332e80df8ae1
SHA256

122647b0e0d506d90083df1b85b045bcdfe2865b7ed56f5841bf3923cb053686
SHA512

adec58c00b406f00308a35cfa1b9046073c443e5b27e4eea0bab108c4f7f7e303c47d446dbd51e89deac807b95f48038c5f24b1c313fb47c08bc7fc3f408fe2c
SSDEEP

12288:/n8yN0Mr8ZmkVyy2Vypm3MsS50ugfWaJexX6:vPuZmkVyy2uY7S5hV6

Score

7^/10

discovery persistence spyware stealer

Malware Config

Signatures

Checks computer location settings 2 TTPs 2 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-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	2d6f723b9839621479baf29358634f10N.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	Isass.exe

Executes dropped EXE 3 IoCs

pid	Process
1960	Isass.exe
4676	Isass.exe
4836	2d6f723b9839621479baf29358634f10N.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Users\\Public\\Microsoft Build\\Isass.exe"	2d6f723b9839621479baf29358634f10N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Users\\Public\\Microsoft Build\\Isass.exe"	2d6f723b9839621479baf29358634f10N.exe

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 3 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	2d6f723b9839621479baf29358634f10N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Isass.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Isass.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2732	2d6f723b9839621479baf29358634f10N.exe
2732	2d6f723b9839621479baf29358634f10N.exe
1960	Isass.exe
1960	Isass.exe
4676	Isass.exe
4676	Isass.exe
4676	Isass.exe
4676	Isass.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2732 wrote to memory of 1960	2732	2d6f723b9839621479baf29358634f10N.exe	83
PID 2732 wrote to memory of 1960	2732	2d6f723b9839621479baf29358634f10N.exe	83
PID 2732 wrote to memory of 1960	2732	2d6f723b9839621479baf29358634f10N.exe	83
PID 2732 wrote to memory of 4676	2732	2d6f723b9839621479baf29358634f10N.exe	84
PID 2732 wrote to memory of 4676	2732	2d6f723b9839621479baf29358634f10N.exe	84
PID 2732 wrote to memory of 4676	2732	2d6f723b9839621479baf29358634f10N.exe	84
PID 4676 wrote to memory of 4836	4676	Isass.exe	86
PID 4676 wrote to memory of 4836	4676	Isass.exe	86

C:\Users\Admin\AppData\Local\Temp\2d6f723b9839621479baf29358634f10N.exe
"C:\Users\Admin\AppData\Local\Temp\2d6f723b9839621479baf29358634f10N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2732
- C:\Users\Public\Microsoft Build\Isass.exe
  "C:\Users\Public\Microsoft Build\Isass.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:1960
- C:\Users\Public\Microsoft Build\Isass.exe
  "C:\Users\Public\Microsoft Build\Isass.exe" Tablet C:\Users\Admin\AppData\Local\Temp\2d6f723b9839621479baf29358634f10N.exe
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4676
- - C:\Users\Admin\AppData\Local\Temp\2d6f723b9839621479baf29358634f10N.exe
    "C:\Users\Admin\AppData\Local\Temp\2d6f723b9839621479baf29358634f10N.exe"
    3⤵
    - Executes dropped EXE
    PID:4836

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\OneDrive\18.151.0729.0013\FileCoAuth.exe

Filesize
719KB

MD5
c4bc3cc03445c896065a59bc76202e6e

SHA1
ef043cc077689558f88086cb411063f15dd2afa0

SHA256
c49b84414c4ec54f0f318e7bd65781ad517282a427e67ff0610fe873698d1b2a

SHA512
86352b4a8b8761be76f95441060d3b1d865ec3ab7b7cd975c493db0285e0db2ec5c45f5314773c5f24e399a5666d3110f341a21e4039afa964c88cbca7e4d922

Download Submit
C:\Users\Admin\AppData\Local\Temp\2d6f723b9839621479baf29358634f10N.exe

Filesize
250KB

MD5
9386c7ffb682c69eadb492071138f495

SHA1
cd4cda7c97645a9ce694f9543b989e5fb898bbe7

SHA256
a4c297fc0b96651ebb71b15398025f80d1f6f592330792ba3eb01d9cd56f9f99

SHA512
9b7c2ee269d6f6f33f8656d9e3958036b441246304dce499e9ada4c7dc844a8d4b42deafc5e1d25dc50d069393f0ce9cdc5765a7ca7b3393511d1defba4f7d21

Download Submit
C:\Users\Public\Microsoft Build\Isass.exe

Filesize
256KB

MD5
38f759cb1674a19b1118366d4a018d9c

SHA1
c6583d6f2d8724a1bf6f28608451bfa870dec96a

SHA256
0b2f27ac9d4776132ead07bee0ca8d8894602a56bfaa8e6ecc5c2a158d3d65f9

SHA512
f2d3d2689236094d7efca17c520347cd453b70715102b34366d2a221ba114a7ede1c1bd142c0e32cd07d282f6254d689a05f05384db93cee9664bf8298fae4ac

Download Submit
memory/1960-33-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/1960-41-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/1960-61-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/1960-57-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/1960-7-0x0000000001B60000-0x0000000001B61000-memory.dmp

Filesize
4KB

Download
memory/1960-49-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/1960-23-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/1960-24-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/1960-27-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/1960-28-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/1960-5-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/1960-32-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/1960-48-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/1960-42-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2732-6-0x0000000002490000-0x0000000002491000-memory.dmp

Filesize
4KB

Download
memory/2732-3-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2732-9-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/4676-22-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/4676-11-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads