guloader | c0b66b41d0206b4e2f3eaff9ff3920a0b312d87482430315a00b47dca50af751

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
07-02-2025 05:35

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General

Target

c0b66b41d0206b4e2f3eaff9ff3920a0b312d87482430315a00b47dca50af751.exe
Size

859KB
MD5

0c905584bc842c087f5b9a927b34d178
SHA1

1320741a3c09793b9b1044b3f3096ec289e3c2ea
SHA256

c0b66b41d0206b4e2f3eaff9ff3920a0b312d87482430315a00b47dca50af751
SHA512

1abbf3e11c7094fc28a415449d16dcf1083668a46f781115f3e2b89cc0d8d0efab75c2adac8050f0d21f5cea002b78ab79f112afaee2567db83cd41cd76c9a5f
SSDEEP

24576:L0fk/yM907kpBcW/8WH5RbiDLTmAYu+oA0Ar2:48acrrcW/vZdkMJ9

Score

10^/10

guloader discovery downloader

Malware Config

Signatures

Guloader family
guloader
Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader

Loads dropped DLL 2 IoCs

pid	Process
2736	c0b66b41d0206b4e2f3eaff9ff3920a0b312d87482430315a00b47dca50af751.exe
2736	c0b66b41d0206b4e2f3eaff9ff3920a0b312d87482430315a00b47dca50af751.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2736	c0b66b41d0206b4e2f3eaff9ff3920a0b312d87482430315a00b47dca50af751.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\komplementrt\halstrkldernes.dds	c0b66b41d0206b4e2f3eaff9ff3920a0b312d87482430315a00b47dca50af751.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
556	1648	WerFault.exe	30

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	c0b66b41d0206b4e2f3eaff9ff3920a0b312d87482430315a00b47dca50af751.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c0b66b41d0206b4e2f3eaff9ff3920a0b312d87482430315a00b47dca50af751.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2736	c0b66b41d0206b4e2f3eaff9ff3920a0b312d87482430315a00b47dca50af751.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2736 wrote to memory of 1648	2736	c0b66b41d0206b4e2f3eaff9ff3920a0b312d87482430315a00b47dca50af751.exe	30
PID 2736 wrote to memory of 1648	2736	c0b66b41d0206b4e2f3eaff9ff3920a0b312d87482430315a00b47dca50af751.exe	30
PID 2736 wrote to memory of 1648	2736	c0b66b41d0206b4e2f3eaff9ff3920a0b312d87482430315a00b47dca50af751.exe	30
PID 2736 wrote to memory of 1648	2736	c0b66b41d0206b4e2f3eaff9ff3920a0b312d87482430315a00b47dca50af751.exe	30
PID 2736 wrote to memory of 1648	2736	c0b66b41d0206b4e2f3eaff9ff3920a0b312d87482430315a00b47dca50af751.exe	30
PID 1648 wrote to memory of 556	1648	c0b66b41d0206b4e2f3eaff9ff3920a0b312d87482430315a00b47dca50af751.exe	31
PID 1648 wrote to memory of 556	1648	c0b66b41d0206b4e2f3eaff9ff3920a0b312d87482430315a00b47dca50af751.exe	31
PID 1648 wrote to memory of 556	1648	c0b66b41d0206b4e2f3eaff9ff3920a0b312d87482430315a00b47dca50af751.exe	31
PID 1648 wrote to memory of 556	1648	c0b66b41d0206b4e2f3eaff9ff3920a0b312d87482430315a00b47dca50af751.exe	31

C:\Users\Admin\AppData\Local\Temp\c0b66b41d0206b4e2f3eaff9ff3920a0b312d87482430315a00b47dca50af751.exe
"C:\Users\Admin\AppData\Local\Temp\c0b66b41d0206b4e2f3eaff9ff3920a0b312d87482430315a00b47dca50af751.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2736
- C:\Users\Admin\AppData\Local\Temp\c0b66b41d0206b4e2f3eaff9ff3920a0b312d87482430315a00b47dca50af751.exe
  "C:\Users\Admin\AppData\Local\Temp\c0b66b41d0206b4e2f3eaff9ff3920a0b312d87482430315a00b47dca50af751.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1648
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1648 -s 104
    3⤵
    - Program crash
    PID:556

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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\nse9DBA.tmp

Filesize
1B

MD5
8ce4b16b22b58894aa86c421e8759df3

SHA1
13fbd79c3d390e5d6585a21e11ff5ec1970cff0c

SHA256
8254c329a92850f6d539dd376f4816ee2764517da5e0235514af433164480d7a

SHA512
2af8a9104b3f64ed640d8c7e298d2d480f03a3610cbc2b33474321ec59024a48592ea8545e41e09d5d1108759df48ede0054f225df39d4f0f312450e0aa9dd25

Download Submit
C:\Users\Admin\AppData\Local\Temp\nse9DBA.tmp

Filesize
2B

MD5
25bc6654798eb508fa0b6343212a74fe

SHA1
15d5e1d3b948fd5986aaff7d9419b5e52c75fc93

SHA256
8e5202705183bd3a20a29e224499b0f77a8273ee33cd93cca71043c57ad4bdfc

SHA512
5868c6241ed3cfcc5c34bfe42e4b9f5c69e74975e524771d8c9f35cafc13fd01cd943ec4d8caefee79a1f4a457e69d20b7a86f88db83a5bc3e6bd8a619972898

Download Submit
C:\Users\Admin\AppData\Local\Temp\nse9DBA.tmp

Filesize
3B

MD5
4e27f2226785e9abbe046fc592668860

SHA1
28b18a7f383131df509f7191f946a32c5a2e410c

SHA256
01a219245e1501fee01ce0baea8f6065ce5162cea12fa570689a07c9717be81d

SHA512
2a23585835bdb5db8175cab265566042282841efdcee8aaba8b9b5d466b0f165c0c5973033ce94bb9a8f07a956689247981ea07ac5a51408263e1653d9710adb

Download Submit
C:\Users\Admin\AppData\Local\Temp\nse9DBA.tmp

Filesize
4B

MD5
cde63b34c142af0a38cbe83791c964f8

SHA1
ece2b194b486118b40ad12c1f0e9425dd0672424

SHA256
65e2d70166c9a802b7ad2a87129b8945f083e5f268878790a9d1f1c03f47938d

SHA512
0559d3d34ad64ccc27e685431c24fc6ead0f645db14fa0e125a64fb67dbd158c15432c1fc5407811aac8a3486090dfbcfcbc3c6bf5aa0ec73f979ef62d14853c

Download Submit
C:\Users\Admin\AppData\Local\Temp\nse9DBA.tmp

Filesize
5B

MD5
e2fecc970546c3418917879fe354826c

SHA1
63f1c1dd01b87704a6b6c99fd9f141e0a3064f16

SHA256
ff91566d755f5d038ae698a2cc0a7d4d14e5273afafc37b6f03afda163768fa0

SHA512
3c4a68cbaee94f986515f43305a0e7620c14c30213d4a17db4a3e8a1b996764eb688bf733f472fc52073c2c80bb5229bb29411d7601aefe1c4370e230c341a0a

Download Submit
C:\Users\Admin\AppData\Local\Temp\nse9DBA.tmp

Filesize
6B

MD5
50484c19f1afdaf3841a0d821ed393d2

SHA1
c65a0fb7e74ffd2c9fc3a0f9aacb0f6a24b0a68b

SHA256
6923dd1bc0460082c5d55a831908c24a282860b7f1cd6c2b79cf1bc8857c639c

SHA512
d51a20d67571fe70bcd6c36e1382a3c342f42671c710090b75fcfc2405ce24488e03a7131eefe4751d0bd3aeaad816605ad10c8e3258d72fcf379e32416cbf3b

Download Submit
C:\Users\Admin\AppData\Local\Temp\nse9DBA.tmp

Filesize
7B

MD5
67cfa7364c4cf265b047d87ff2e673ae

SHA1
56e27889277981a9b63fcf5b218744a125bbc2fa

SHA256
639b68bd180b47d542dd001d03557ee2d5b3065c3c783143bc9fb548f3fd7713

SHA512
17f28a136b20b89e9c3a418b08fd8e6fcaac960872dc33b2481af2d872efc44228f420759c57724f5d953c7ba98f2283e2acc7dfe5a58cbf719c6480ec7a648b

Download Submit
C:\Users\Admin\AppData\Local\Temp\nse9DBA.tmp

Filesize
8B

MD5
c3cb69218b85c3260387fb582cb518dd

SHA1
961c892ded09a4cbb5392097bb845ccba65902ad

SHA256
1c329924865741e0222d3ead23072cfbed14f96e2b0432573068eb0640513101

SHA512
2402fffeb89c531db742bf6f5466eee8fe13edf97b8ecfc2cace3522806b322924d1ca81dda25e59b4047b8f40ad11ae9216e0a0d5c7fc6beef4368eb9551422

Download Submit
C:\Users\Admin\AppData\Local\Temp\nse9DBA.tmp

Filesize
9B

MD5
2b3884fe02299c565e1c37ee7ef99293

SHA1
d8e2ef2a52083f6df210109fea53860ea227af9c

SHA256
ae789a65914ed002efb82dad89e5a4d4b9ec8e7faae30d0ed6e3c0d20f7d3858

SHA512
aeb9374a52d0ad99336bfd4ec7bb7c5437b827845b8784d9c21f7d96a931693604689f6adc3ca25fad132a0ad6123013211ff550f427fa86e4f26c122ac6a0fe

Download Submit
C:\Users\Admin\AppData\Local\Temp\nse9DBA.tmp

Filesize
10B

MD5
9a53fc1d7126c5e7c81bb5c15b15537b

SHA1
e2d13e0fa37de4c98f30c728210d6afafbb2b000

SHA256
a7de06c22e4e67908840ec3f00ab8fe9e04ae94fb16a74136002afbaf607ff92

SHA512
b0bffbb8072dbdcfc68f0e632f727c08fe3ef936b2ef332c08486553ff2cef7b0bcdb400e421a117e977bb0fac17ce4706a8097e32d558a918433646b6d5f1a1

Download Submit
\Users\Admin\AppData\Local\Temp\nst9C8F.tmp\System.dll

Filesize
11KB

MD5
960a5c48e25cf2bca332e74e11d825c9

SHA1
da35c6816ace5daf4c6c1d57b93b09a82ecdc876

SHA256
484f8e9f194ed9016274ef3672b2c52ed5f574fb71d3884edf3c222b758a75a2

SHA512
cc450179e2d0d56aee2ccf8163d3882978c4e9c1aa3d3a95875fe9ba9831e07ddfd377111dc67f801fa53b6f468a418f086f1de7c71e0a5b634e1ae2a67cd3da

Download Submit
memory/1648-588-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/1648-587-0x0000000001470000-0x0000000006D01000-memory.dmp

Filesize
88.6MB

Download
memory/1648-590-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2736-586-0x0000000077470000-0x0000000077619000-memory.dmp

Filesize
1.7MB

Download
memory/2736-585-0x0000000077471000-0x0000000077572000-memory.dmp

Filesize
1.0MB

Download