guloader | 4a30f84c5fc555603a11244bf58e1a01bacfc09047068f942d48d674a1375c6d

Analysis

max time kernel
151s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
07-10-2023 17:28

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General

Target

NEAS.4a30f84c5fc555603a11244bf58e1a01bacfc09047068f942d48d674a1375c6dexe_JC.exe
Size

387KB
MD5

f80d07045b8aba5de2ba621910e001ac
SHA1

91d543054f3fb15f5ca7ce2ff0b447b548d7a90b
SHA256

4a30f84c5fc555603a11244bf58e1a01bacfc09047068f942d48d674a1375c6d
SHA512

76a99da6cf3bf7cb2547de99d1c183213113774098402567b39bb04f7a7b80db2c04b78b3ac1f824e71e633cec8a9891f40f5e4b6f1b90727ad78228b7fcc615
SSDEEP

6144:IqaFH+9KGmy45F3aK5/FnSHKqcnHfuPodNgDzBQxCrjNqms5IbPhalnKay:I5Lvh59j/FnLqSHfnNMdrjNm5IUlnKD

Score

10^/10

guloader xworm downloader persistence rat trojan

Malware Config

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/3064-83-0x0000000073460000-0x00000000746B4000-memory.dmp	family_xworm

Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader
Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

Checks QEMU agent file 2 TTPs 2 IoCs

Checks presence of QEMU agent, possibly to detect virtualization.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	wab.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	NEAS.4a30f84c5fc555603a11244bf58e1a01bacfc09047068f942d48d674a1375c6dexe_JC.exe

Loads dropped DLL 11 IoCs

pid	Process
3076	NEAS.4a30f84c5fc555603a11244bf58e1a01bacfc09047068f942d48d674a1375c6dexe_JC.exe
3076	NEAS.4a30f84c5fc555603a11244bf58e1a01bacfc09047068f942d48d674a1375c6dexe_JC.exe
3076	NEAS.4a30f84c5fc555603a11244bf58e1a01bacfc09047068f942d48d674a1375c6dexe_JC.exe
3076	NEAS.4a30f84c5fc555603a11244bf58e1a01bacfc09047068f942d48d674a1375c6dexe_JC.exe
3076	NEAS.4a30f84c5fc555603a11244bf58e1a01bacfc09047068f942d48d674a1375c6dexe_JC.exe
3076	NEAS.4a30f84c5fc555603a11244bf58e1a01bacfc09047068f942d48d674a1375c6dexe_JC.exe
3076	NEAS.4a30f84c5fc555603a11244bf58e1a01bacfc09047068f942d48d674a1375c6dexe_JC.exe
3076	NEAS.4a30f84c5fc555603a11244bf58e1a01bacfc09047068f942d48d674a1375c6dexe_JC.exe
3076	NEAS.4a30f84c5fc555603a11244bf58e1a01bacfc09047068f942d48d674a1375c6dexe_JC.exe
3076	NEAS.4a30f84c5fc555603a11244bf58e1a01bacfc09047068f942d48d674a1375c6dexe_JC.exe
3076	NEAS.4a30f84c5fc555603a11244bf58e1a01bacfc09047068f942d48d674a1375c6dexe_JC.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-1-5-21-1574508946-349927670-1185736483-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Startup key = "C:\\Users\\Admin\\AppData\\Local\\Temp\\subfolder1\\Bumpy.exe"	wab.exe

Suspicious use of NtCreateThreadExHideFromDebugger 2 IoCs

pid	Process
3064	wab.exe
3064	wab.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
3076	NEAS.4a30f84c5fc555603a11244bf58e1a01bacfc09047068f942d48d674a1375c6dexe_JC.exe
3064	wab.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3076 set thread context of 3064	3076	NEAS.4a30f84c5fc555603a11244bf58e1a01bacfc09047068f942d48d674a1375c6dexe_JC.exe	97

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

System Information Discovery
T1082

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3076	NEAS.4a30f84c5fc555603a11244bf58e1a01bacfc09047068f942d48d674a1375c6dexe_JC.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3064	wab.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3076 wrote to memory of 3064	3076	NEAS.4a30f84c5fc555603a11244bf58e1a01bacfc09047068f942d48d674a1375c6dexe_JC.exe	97
PID 3076 wrote to memory of 3064	3076	NEAS.4a30f84c5fc555603a11244bf58e1a01bacfc09047068f942d48d674a1375c6dexe_JC.exe	97
PID 3076 wrote to memory of 3064	3076	NEAS.4a30f84c5fc555603a11244bf58e1a01bacfc09047068f942d48d674a1375c6dexe_JC.exe	97
PID 3076 wrote to memory of 3064	3076	NEAS.4a30f84c5fc555603a11244bf58e1a01bacfc09047068f942d48d674a1375c6dexe_JC.exe	97
PID 3076 wrote to memory of 3064	3076	NEAS.4a30f84c5fc555603a11244bf58e1a01bacfc09047068f942d48d674a1375c6dexe_JC.exe	97

C:\Users\Admin\AppData\Local\Temp\NEAS.4a30f84c5fc555603a11244bf58e1a01bacfc09047068f942d48d674a1375c6dexe_JC.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.4a30f84c5fc555603a11244bf58e1a01bacfc09047068f942d48d674a1375c6dexe_JC.exe"
1⤵
- Checks QEMU agent file
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3076
- C:\Program Files (x86)\windows mail\wab.exe
  "C:\Users\Admin\AppData\Local\Temp\NEAS.4a30f84c5fc555603a11244bf58e1a01bacfc09047068f942d48d674a1375c6dexe_JC.exe"
  2⤵
  - Checks QEMU agent file
  - Adds Run key to start application
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetWindowsHookEx
  PID:3064

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\nsrBDF2.tmp\LangDLL.dll

Filesize
5KB

MD5
be828e6e1885cc5a25e18f123e2a76a0

SHA1
96432bf2da4e1c454f49f76e20855f27c2fce2f9

SHA256
01773690efda3c1fa609287f4bf2277f3d366fe4a1ddc099d2949fab54f0fbd4

SHA512
983e9a9e941b162031b8acf372c3ec12180b54f8e5f7172a6e87599e127170240841889d6e346a730f4970c9079f5f9cededc2730f910eb4e0bb897f68cfca70

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsrBDF2.tmp\LangDLL.dll

Filesize
5KB

MD5
be828e6e1885cc5a25e18f123e2a76a0

SHA1
96432bf2da4e1c454f49f76e20855f27c2fce2f9

SHA256
01773690efda3c1fa609287f4bf2277f3d366fe4a1ddc099d2949fab54f0fbd4

SHA512
983e9a9e941b162031b8acf372c3ec12180b54f8e5f7172a6e87599e127170240841889d6e346a730f4970c9079f5f9cededc2730f910eb4e0bb897f68cfca70

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsrBDF2.tmp\LangDLL.dll

Filesize
5KB

MD5
be828e6e1885cc5a25e18f123e2a76a0

SHA1
96432bf2da4e1c454f49f76e20855f27c2fce2f9

SHA256
01773690efda3c1fa609287f4bf2277f3d366fe4a1ddc099d2949fab54f0fbd4

SHA512
983e9a9e941b162031b8acf372c3ec12180b54f8e5f7172a6e87599e127170240841889d6e346a730f4970c9079f5f9cededc2730f910eb4e0bb897f68cfca70

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsrBDF2.tmp\LangDLL.dll

Filesize
5KB

MD5
be828e6e1885cc5a25e18f123e2a76a0

SHA1
96432bf2da4e1c454f49f76e20855f27c2fce2f9

SHA256
01773690efda3c1fa609287f4bf2277f3d366fe4a1ddc099d2949fab54f0fbd4

SHA512
983e9a9e941b162031b8acf372c3ec12180b54f8e5f7172a6e87599e127170240841889d6e346a730f4970c9079f5f9cededc2730f910eb4e0bb897f68cfca70

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsrBDF2.tmp\LangDLL.dll

Filesize
5KB

MD5
be828e6e1885cc5a25e18f123e2a76a0

SHA1
96432bf2da4e1c454f49f76e20855f27c2fce2f9

SHA256
01773690efda3c1fa609287f4bf2277f3d366fe4a1ddc099d2949fab54f0fbd4

SHA512
983e9a9e941b162031b8acf372c3ec12180b54f8e5f7172a6e87599e127170240841889d6e346a730f4970c9079f5f9cededc2730f910eb4e0bb897f68cfca70

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsrBDF2.tmp\LangDLL.dll

Filesize
5KB

MD5
be828e6e1885cc5a25e18f123e2a76a0

SHA1
96432bf2da4e1c454f49f76e20855f27c2fce2f9

SHA256
01773690efda3c1fa609287f4bf2277f3d366fe4a1ddc099d2949fab54f0fbd4

SHA512
983e9a9e941b162031b8acf372c3ec12180b54f8e5f7172a6e87599e127170240841889d6e346a730f4970c9079f5f9cededc2730f910eb4e0bb897f68cfca70

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsrBDF2.tmp\LangDLL.dll

Filesize
5KB

MD5
be828e6e1885cc5a25e18f123e2a76a0

SHA1
96432bf2da4e1c454f49f76e20855f27c2fce2f9

SHA256
01773690efda3c1fa609287f4bf2277f3d366fe4a1ddc099d2949fab54f0fbd4

SHA512
983e9a9e941b162031b8acf372c3ec12180b54f8e5f7172a6e87599e127170240841889d6e346a730f4970c9079f5f9cededc2730f910eb4e0bb897f68cfca70

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsrBDF2.tmp\LangDLL.dll

Filesize
5KB

MD5
be828e6e1885cc5a25e18f123e2a76a0

SHA1
96432bf2da4e1c454f49f76e20855f27c2fce2f9

SHA256
01773690efda3c1fa609287f4bf2277f3d366fe4a1ddc099d2949fab54f0fbd4

SHA512
983e9a9e941b162031b8acf372c3ec12180b54f8e5f7172a6e87599e127170240841889d6e346a730f4970c9079f5f9cededc2730f910eb4e0bb897f68cfca70

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsrBDF2.tmp\LangDLL.dll

Filesize
5KB

MD5
be828e6e1885cc5a25e18f123e2a76a0

SHA1
96432bf2da4e1c454f49f76e20855f27c2fce2f9

SHA256
01773690efda3c1fa609287f4bf2277f3d366fe4a1ddc099d2949fab54f0fbd4

SHA512
983e9a9e941b162031b8acf372c3ec12180b54f8e5f7172a6e87599e127170240841889d6e346a730f4970c9079f5f9cededc2730f910eb4e0bb897f68cfca70

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsrBDF2.tmp\LangDLL.dll

Filesize
5KB

MD5
be828e6e1885cc5a25e18f123e2a76a0

SHA1
96432bf2da4e1c454f49f76e20855f27c2fce2f9

SHA256
01773690efda3c1fa609287f4bf2277f3d366fe4a1ddc099d2949fab54f0fbd4

SHA512
983e9a9e941b162031b8acf372c3ec12180b54f8e5f7172a6e87599e127170240841889d6e346a730f4970c9079f5f9cededc2730f910eb4e0bb897f68cfca70

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsrBDF2.tmp\System.dll

Filesize
11KB

MD5
ee260c45e97b62a5e42f17460d406068

SHA1
df35f6300a03c4d3d3bd69752574426296b78695

SHA256
e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27

SHA512
a98f350d17c9057f33e5847462a87d59cbf2aaeda7f6299b0d49bb455e484ce4660c12d2eb8c4a0d21df523e729222bbd6c820bf25b081bc7478152515b414b3

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsrBDF2.tmp\System.dll

Filesize
11KB

MD5
ee260c45e97b62a5e42f17460d406068

SHA1
df35f6300a03c4d3d3bd69752574426296b78695

SHA256
e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27

SHA512
a98f350d17c9057f33e5847462a87d59cbf2aaeda7f6299b0d49bb455e484ce4660c12d2eb8c4a0d21df523e729222bbd6c820bf25b081bc7478152515b414b3

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsrBDF2.tmp\System.dll

Filesize
11KB

MD5
ee260c45e97b62a5e42f17460d406068

SHA1
df35f6300a03c4d3d3bd69752574426296b78695

SHA256
e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27

SHA512
a98f350d17c9057f33e5847462a87d59cbf2aaeda7f6299b0d49bb455e484ce4660c12d2eb8c4a0d21df523e729222bbd6c820bf25b081bc7478152515b414b3

Download Submit
memory/3064-70-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-76-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-112-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-111-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-110-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-41-0x0000000000DC0000-0x00000000032FC000-memory.dmp

Filesize
37.2MB

Download
memory/3064-43-0x0000000000DC0000-0x00000000032FC000-memory.dmp

Filesize
37.2MB

Download
memory/3064-44-0x0000000077C48000-0x0000000077C49000-memory.dmp

Filesize
4KB

Download
memory/3064-45-0x0000000077BC1000-0x0000000077CE1000-memory.dmp

Filesize
1.1MB

Download
memory/3064-46-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-50-0x0000000000DC0000-0x00000000032FC000-memory.dmp

Filesize
37.2MB

Download
memory/3064-52-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-51-0x0000000000DC0000-0x00000000032FC000-memory.dmp

Filesize
37.2MB

Download
memory/3064-53-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-54-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-55-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-56-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-57-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-58-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-59-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-60-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-61-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-63-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-64-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-65-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-66-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-67-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-109-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-71-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-72-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-73-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-74-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-75-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-108-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-77-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-78-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-79-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-80-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-81-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-82-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-83-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-84-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-85-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-86-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-87-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-88-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-89-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-90-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-92-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-94-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-95-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-96-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-97-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-98-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-99-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-100-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-102-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-103-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-104-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-105-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-106-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3064-107-0x0000000073460000-0x00000000746B4000-memory.dmp

Filesize
18.3MB

Download
memory/3076-37-0x0000000004230000-0x000000000676C000-memory.dmp

Filesize
37.2MB

Download
memory/3076-36-0x0000000004230000-0x000000000676C000-memory.dmp

Filesize
37.2MB

Download
memory/3076-40-0x0000000010000000-0x0000000010006000-memory.dmp

Filesize
24KB

Download
memory/3076-39-0x0000000077BC1000-0x0000000077CE1000-memory.dmp

Filesize
1.1MB

Download
memory/3076-38-0x0000000077BC1000-0x0000000077CE1000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads