d5b921e996ed397bd85d39c37ecf7e2c0126b3ab9c06965570b93703d19a498d

General

Target

d5b921e996ed397bd85d39c37ecf7e2c0126b3ab9c06965570b93703d19a498d.exe
Size

41KB
MD5

c241103df0d2591cdefad94b69e4a951
SHA1

77b595bf8ae57f8395a96ac060b7fd57b7921dea
SHA256

d5b921e996ed397bd85d39c37ecf7e2c0126b3ab9c06965570b93703d19a498d
SHA512

21cc9f92ee5a39c0f2be068cdcd83eff446c1be1092898a4309ecc897612b6b00728f0678547ac904ace7d3726203187b8198337b10614e3afc0727a7e59abd2
SSDEEP

768:rKsL+/5N7hF5sxUuhQ0L4Ag2KZtB4orV9qX6xZZBxy3:rczhXR1AW5TvR92+76

Score

8^/10

upx

Malware Config

Signatures

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1400-132-0x0000000000400000-0x000000000041B000-memory.dmp	upx
behavioral2/memory/1456-133-0x0000000000400000-0x000000000041B000-memory.dmp	upx
behavioral2/memory/1400-135-0x0000000000400000-0x000000000041B000-memory.dmp	upx
behavioral2/memory/1456-137-0x0000000000400000-0x000000000041B000-memory.dmp	upx

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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	d5b921e996ed397bd85d39c37ecf7e2c0126b3ab9c06965570b93703d19a498d.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	BRemotes.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	BRemotes.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	BRemotes.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	BRemotes.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4532	1456	WerFault.exe	81

Modifies data under HKEY_USERS 8 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	BRemotes.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	BRemotes.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	BRemotes.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	BRemotes.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	BRemotes.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	BRemotes.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	BRemotes.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	BRemotes.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings	d5b921e996ed397bd85d39c37ecf7e2c0126b3ab9c06965570b93703d19a498d.exe

Suspicious behavior: RenamesItself 2 IoCs

pid	Process
1400	d5b921e996ed397bd85d39c37ecf7e2c0126b3ab9c06965570b93703d19a498d.exe
1456	BRemotes.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1400	d5b921e996ed397bd85d39c37ecf7e2c0126b3ab9c06965570b93703d19a498d.exe
Token: SeDebugPrivilege	1456	BRemotes.exe
Token: SeDebugPrivilege	1456	BRemotes.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1400 wrote to memory of 3380	1400	d5b921e996ed397bd85d39c37ecf7e2c0126b3ab9c06965570b93703d19a498d.exe	82
PID 1400 wrote to memory of 3380	1400	d5b921e996ed397bd85d39c37ecf7e2c0126b3ab9c06965570b93703d19a498d.exe	82
PID 1400 wrote to memory of 3380	1400	d5b921e996ed397bd85d39c37ecf7e2c0126b3ab9c06965570b93703d19a498d.exe	82

C:\Users\Admin\AppData\Local\Temp\d5b921e996ed397bd85d39c37ecf7e2c0126b3ab9c06965570b93703d19a498d.exe
"C:\Users\Admin\AppData\Local\Temp\d5b921e996ed397bd85d39c37ecf7e2c0126b3ab9c06965570b93703d19a498d.exe"
1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1400
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\9000.vbs"
  2⤵
  PID:3380

C:\WINDOWS\SysWOW64\BRemotes.exe
C:\WINDOWS\SysWOW64\BRemotes.exe
1⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
PID:1456
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1456 -s 1420
  2⤵
  - Program crash
  PID:4532

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 1456 -ip 1456
1⤵
PID:4828

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\9000.vbs

Filesize
500B

MD5
c341e5b4c85c30c3ca9fa2eceb748e04

SHA1
844550d4f740b758c9465125ae7633efa8bea729

SHA256
dec2cf3ddff4477a0fe68b2e1d2ba7ee64b7e68c945901b979ffdd04c3bfcedf

SHA512
b3adb636ef1ec85706de43b505a1a7da1f487ebc680c840006df8cca6a0bcb529b1b251207800d86f1ddb39d4e83f386c5490dbcca5701ad1ebd069593338689

Download Submit
memory/1400-132-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1400-135-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1456-133-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1456-137-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/3380-134-0x0000000000000000-mapping.dmp

Download

Analysis

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