guloader | 7fd5435121f2cb4320b1bc49400152ec3fecce7f5ce0acce56f32c327126c970

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
16-10-2024 05:07

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General

Target

7fd5435121f2cb4320b1bc49400152ec3fecce7f5ce0acce56f32c327126c970.exe
Size

5.1MB
MD5

f3a3332b13baa50c41644b86efdf0fe4
SHA1

f3b91aa55b8dce62cb614e2a43d8e3973b1d47b6
SHA256

7fd5435121f2cb4320b1bc49400152ec3fecce7f5ce0acce56f32c327126c970
SHA512

46808e4d79d0d1fbe2835456daf31e0de9e8f296b7863f38400eaa03fbf33be450f92df16f9b77ac5bb95aa33a97d484c1c678891c6e13b151f9cb7865c99be7
SSDEEP

98304:EH//4Q0gBDcLaUgZLGTVCfjemnYMjgfRQ14dewsjdis7xGC4tIf/Yapu5koUe:0BD4aUgZLhj3gZj67xHRnFpu5kPe

Score

10^/10

guloader xworm discovery downloader persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

3.1

xwor3july.duckdns.org:9402

Mutex

JIs7HXfvmVwG8wtR

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/2076-597-0x0000000000800000-0x000000000080E000-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

Loads dropped DLL 2 IoCs

pid	Process
5068	7fd5435121f2cb4320b1bc49400152ec3fecce7f5ce0acce56f32c327126c970.exe
5068	7fd5435121f2cb4320b1bc49400152ec3fecce7f5ce0acce56f32c327126c970.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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Afmystificeringen = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Unsurveyable197\\Busaos.pif"	7fd5435121f2cb4320b1bc49400152ec3fecce7f5ce0acce56f32c327126c970.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\traveskoen.ini	7fd5435121f2cb4320b1bc49400152ec3fecce7f5ce0acce56f32c327126c970.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2076	7fd5435121f2cb4320b1bc49400152ec3fecce7f5ce0acce56f32c327126c970.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
5068	7fd5435121f2cb4320b1bc49400152ec3fecce7f5ce0acce56f32c327126c970.exe
2076	7fd5435121f2cb4320b1bc49400152ec3fecce7f5ce0acce56f32c327126c970.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5068 set thread context of 2076	5068	7fd5435121f2cb4320b1bc49400152ec3fecce7f5ce0acce56f32c327126c970.exe	93

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	7fd5435121f2cb4320b1bc49400152ec3fecce7f5ce0acce56f32c327126c970.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7fd5435121f2cb4320b1bc49400152ec3fecce7f5ce0acce56f32c327126c970.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2076	7fd5435121f2cb4320b1bc49400152ec3fecce7f5ce0acce56f32c327126c970.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
5068	7fd5435121f2cb4320b1bc49400152ec3fecce7f5ce0acce56f32c327126c970.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2076	7fd5435121f2cb4320b1bc49400152ec3fecce7f5ce0acce56f32c327126c970.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2076	7fd5435121f2cb4320b1bc49400152ec3fecce7f5ce0acce56f32c327126c970.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 5068 wrote to memory of 2076	5068	7fd5435121f2cb4320b1bc49400152ec3fecce7f5ce0acce56f32c327126c970.exe	93
PID 5068 wrote to memory of 2076	5068	7fd5435121f2cb4320b1bc49400152ec3fecce7f5ce0acce56f32c327126c970.exe	93
PID 5068 wrote to memory of 2076	5068	7fd5435121f2cb4320b1bc49400152ec3fecce7f5ce0acce56f32c327126c970.exe	93
PID 5068 wrote to memory of 2076	5068	7fd5435121f2cb4320b1bc49400152ec3fecce7f5ce0acce56f32c327126c970.exe	93
PID 5068 wrote to memory of 2076	5068	7fd5435121f2cb4320b1bc49400152ec3fecce7f5ce0acce56f32c327126c970.exe	93

C:\Users\Admin\AppData\Local\Temp\7fd5435121f2cb4320b1bc49400152ec3fecce7f5ce0acce56f32c327126c970.exe
"C:\Users\Admin\AppData\Local\Temp\7fd5435121f2cb4320b1bc49400152ec3fecce7f5ce0acce56f32c327126c970.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:5068
- C:\Users\Admin\AppData\Local\Temp\7fd5435121f2cb4320b1bc49400152ec3fecce7f5ce0acce56f32c327126c970.exe
  "C:\Users\Admin\AppData\Local\Temp\7fd5435121f2cb4320b1bc49400152ec3fecce7f5ce0acce56f32c327126c970.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2076

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\Local\Temp\nsoC3E2.tmp

Filesize
6B

MD5
d21dbd2c4e178b2cb55dce0c6a43effc

SHA1
f3c41043ce753ede3017f8b21dbac8d34af8eb7d

SHA256
54a2979a455bec056285887a8137d1bfe6cbfd229e558ea4d28cd67cf81ed38e

SHA512
858edf34e2cc85dfd3c12b89c60070304cc30781619dfb58be20914359c5623836905681efd2aa44d686907dd5c7d3176c24ff16699b78d3b82096a3e91dcb0e

Download Submit
C:\Users\Admin\AppData\Local\Temp\nstC279.tmp

Filesize
4B

MD5
cde63b34c142af0a38cbe83791c964f8

SHA1
ece2b194b486118b40ad12c1f0e9425dd0672424

SHA256
65e2d70166c9a802b7ad2a87129b8945f083e5f268878790a9d1f1c03f47938d

SHA512
0559d3d34ad64ccc27e685431c24fc6ead0f645db14fa0e125a64fb67dbd158c15432c1fc5407811aac8a3486090dfbcfcbc3c6bf5aa0ec73f979ef62d14853c

Download Submit
C:\Users\Admin\AppData\Local\Temp\nstC279.tmp

Filesize
5B

MD5
e2fecc970546c3418917879fe354826c

SHA1
63f1c1dd01b87704a6b6c99fd9f141e0a3064f16

SHA256
ff91566d755f5d038ae698a2cc0a7d4d14e5273afafc37b6f03afda163768fa0

SHA512
3c4a68cbaee94f986515f43305a0e7620c14c30213d4a17db4a3e8a1b996764eb688bf733f472fc52073c2c80bb5229bb29411d7601aefe1c4370e230c341a0a

Download Submit
C:\Users\Admin\AppData\Local\Temp\nstC279.tmp

Filesize
6B

MD5
50484c19f1afdaf3841a0d821ed393d2

SHA1
c65a0fb7e74ffd2c9fc3a0f9aacb0f6a24b0a68b

SHA256
6923dd1bc0460082c5d55a831908c24a282860b7f1cd6c2b79cf1bc8857c639c

SHA512
d51a20d67571fe70bcd6c36e1382a3c342f42671c710090b75fcfc2405ce24488e03a7131eefe4751d0bd3aeaad816605ad10c8e3258d72fcf379e32416cbf3b

Download Submit
C:\Users\Admin\AppData\Local\Temp\nstC279.tmp

Filesize
7B

MD5
67cfa7364c4cf265b047d87ff2e673ae

SHA1
56e27889277981a9b63fcf5b218744a125bbc2fa

SHA256
639b68bd180b47d542dd001d03557ee2d5b3065c3c783143bc9fb548f3fd7713

SHA512
17f28a136b20b89e9c3a418b08fd8e6fcaac960872dc33b2481af2d872efc44228f420759c57724f5d953c7ba98f2283e2acc7dfe5a58cbf719c6480ec7a648b

Download Submit
C:\Users\Admin\AppData\Local\Temp\nstC279.tmp

Filesize
8B

MD5
c3cb69218b85c3260387fb582cb518dd

SHA1
961c892ded09a4cbb5392097bb845ccba65902ad

SHA256
1c329924865741e0222d3ead23072cfbed14f96e2b0432573068eb0640513101

SHA512
2402fffeb89c531db742bf6f5466eee8fe13edf97b8ecfc2cace3522806b322924d1ca81dda25e59b4047b8f40ad11ae9216e0a0d5c7fc6beef4368eb9551422

Download Submit
C:\Users\Admin\AppData\Local\Temp\nstC279.tmp

Filesize
9B

MD5
2b3884fe02299c565e1c37ee7ef99293

SHA1
d8e2ef2a52083f6df210109fea53860ea227af9c

SHA256
ae789a65914ed002efb82dad89e5a4d4b9ec8e7faae30d0ed6e3c0d20f7d3858

SHA512
aeb9374a52d0ad99336bfd4ec7bb7c5437b827845b8784d9c21f7d96a931693604689f6adc3ca25fad132a0ad6123013211ff550f427fa86e4f26c122ac6a0fe

Download Submit
C:\Users\Admin\AppData\Local\Temp\nstC279.tmp

Filesize
10B

MD5
9a53fc1d7126c5e7c81bb5c15b15537b

SHA1
e2d13e0fa37de4c98f30c728210d6afafbb2b000

SHA256
a7de06c22e4e67908840ec3f00ab8fe9e04ae94fb16a74136002afbaf607ff92

SHA512
b0bffbb8072dbdcfc68f0e632f727c08fe3ef936b2ef332c08486553ff2cef7b0bcdb400e421a117e977bb0fac17ce4706a8097e32d558a918433646b6d5f1a1

Download Submit
C:\Users\Admin\AppData\Local\Temp\nstC279.tmp

Filesize
20B

MD5
981d979ec49cb64b078f50013c191acd

SHA1
18f103644da4913b96391b7d457ded5706e4d0f2

SHA256
f4e95849a9bf43f048e70b6beb4716762d41fd3efcb59bc58923386a6e3aeb5b

SHA512
d2901d088095cfb15227db5b49f510591e3480be1d4bd16991e794347657bcc4e1e940834961a09d9eaf48c3224886b850973a8eff9cd3ee74f7eec622bb6eba

Download Submit
C:\Users\Admin\AppData\Local\Temp\nstC279.tmp

Filesize
26B

MD5
b42b894b52848a0731561b7d91665a86

SHA1
6c849620fa8de81e3ae792763ee16f8557422243

SHA256
47c3200448acdbbc900646793f4e4bee95b3967eb7b2c1f5dfb5ced4277ba5fb

SHA512
96b670288335d02c51606f39b3b8007780d34405ee7f2ef0ff977af15cd9031a9fa06383bbea2fffce915c34852ec698f3f3d1a18c64a0fdcfee97c09e70a49a

Download Submit
C:\Users\Admin\AppData\Local\Temp\nstC279.tmp

Filesize
33B

MD5
d4d1be24d3403f94d885f433e0bea5af

SHA1
19e125c21fbcea6d4783138e044f0844a7a18737

SHA256
a92981cf030f082a2794118ef2d8e2b78983be9ea90d5444e509dfe8dc5adea5

SHA512
058aaba0fddc29907d6354dae22f82e503c4e39e50e80aaae0a76c177f90ebf41a993401cdd512045311f6f079de6359a8f447e8f3746d67a094118a97e9fea0

Download Submit
C:\Users\Admin\AppData\Local\Temp\nstC279.tmp

Filesize
48B

MD5
2661e53619ee5b677ea08f0d99d0c1ab

SHA1
6aa0319d9b6189134ac276edfd89f34b85501d8c

SHA256
a86aee704efddf4013e446da0c97f6f94eadbe1fa058a262c54b679349d20122

SHA512
7d89a5b589f3d593a653a1c7eab64fb7ec42a901ff43361b906fe24e2a050676d8b1870aef495f2bd3a1bdbbfb5328e41304a249f09e4d8ca9960c1e70244b2c

Download Submit
C:\Users\Admin\AppData\Local\Temp\nstC279.tmp

Filesize
53B

MD5
da31f488af118efcceb987bbb0e20466

SHA1
4db971112031c8fd491c89db711d99f4dfe729fb

SHA256
1d28a62d6fd156f770a5e21eda581e4b699e25dbc74cc2204bb87645f783755c

SHA512
88a08dedcae889a6fe801390712422bd9cbb2c5cb52edb90be4050c8ffbcb74fb371cd770ad0728b6dd587b90d339fa4009a6c5f843c5a91302f1a2340677b8f

Download Submit
C:\Users\Admin\AppData\Local\Temp\nstC279.tmp

Filesize
60B

MD5
57fcc15efb7333330e4ce43a197a823f

SHA1
66bd1a4b000cf26b6e568cacdda0e9f88c28f899

SHA256
30a71bbb38285baea3079d8868ee88c97c988727e3a139528fc153291328e394

SHA512
c1b9fda9ba474f6ff65a37656c8cddf072556a2eef653dd043fe1e3ae89e1ae8311aa0433bbb5c989912edbb21c85ed70f6866ab6957c83b88a085ccc4ae0316

Download Submit
C:\Users\Admin\AppData\Local\Temp\nstC316.tmp

Filesize
1B

MD5
8ce4b16b22b58894aa86c421e8759df3

SHA1
13fbd79c3d390e5d6585a21e11ff5ec1970cff0c

SHA256
8254c329a92850f6d539dd376f4816ee2764517da5e0235514af433164480d7a

SHA512
2af8a9104b3f64ed640d8c7e298d2d480f03a3610cbc2b33474321ec59024a48592ea8545e41e09d5d1108759df48ede0054f225df39d4f0f312450e0aa9dd25

Download Submit
C:\Users\Admin\AppData\Local\Temp\nstC316.tmp

Filesize
3B

MD5
4e27f2226785e9abbe046fc592668860

SHA1
28b18a7f383131df509f7191f946a32c5a2e410c

SHA256
01a219245e1501fee01ce0baea8f6065ce5162cea12fa570689a07c9717be81d

SHA512
2a23585835bdb5db8175cab265566042282841efdcee8aaba8b9b5d466b0f165c0c5973033ce94bb9a8f07a956689247981ea07ac5a51408263e1653d9710adb

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsyC1AC.tmp\System.dll

Filesize
11KB

MD5
0063d48afe5a0cdc02833145667b6641

SHA1
e7eb614805d183ecb1127c62decb1a6be1b4f7a8

SHA256
ac9dfe3b35ea4b8932536ed7406c29a432976b685cc5322f94ef93df920fede7

SHA512
71cbbcaeb345e09306e368717ea0503fe8df485be2e95200febc61bcd8ba74fb4211cd263c232f148c0123f6c6f2e3fd4ea20bdecc4070f5208c35c6920240f0

Download Submit
memory/2076-596-0x0000000000800000-0x0000000001A54000-memory.dmp

Filesize
18.3MB

Download
memory/2076-600-0x0000000077121000-0x0000000077241000-memory.dmp

Filesize
1.1MB

Download
memory/2076-604-0x0000000035F20000-0x0000000035F86000-memory.dmp

Filesize
408KB

Download
memory/2076-603-0x0000000033C60000-0x0000000033C6A000-memory.dmp

Filesize
40KB

Download
memory/2076-586-0x0000000001A60000-0x00000000030F4000-memory.dmp

Filesize
22.6MB

Download
memory/2076-587-0x00000000771A8000-0x00000000771A9000-memory.dmp

Filesize
4KB

Download
memory/2076-589-0x0000000001A60000-0x00000000030F4000-memory.dmp

Filesize
22.6MB

Download
memory/2076-602-0x0000000036970000-0x0000000036A02000-memory.dmp

Filesize
584KB

Download
memory/2076-597-0x0000000000800000-0x000000000080E000-memory.dmp

Filesize
56KB

Download
memory/2076-598-0x0000000035D80000-0x0000000035E1C000-memory.dmp

Filesize
624KB

Download
memory/2076-601-0x00000000362C0000-0x0000000036864000-memory.dmp

Filesize
5.6MB

Download
memory/5068-583-0x0000000077121000-0x0000000077241000-memory.dmp

Filesize
1.1MB

Download
memory/5068-582-0x0000000004FD0000-0x0000000006664000-memory.dmp

Filesize
22.6MB

Download
memory/5068-585-0x0000000004FD0000-0x0000000006664000-memory.dmp

Filesize
22.6MB

Download
memory/5068-584-0x0000000073D74000-0x0000000073D75000-memory.dmp

Filesize
4KB

Download