f0031f9d7f25d4d29581879f62565a5a565995899adc60213f9e218147c78593

General

Target

MuMuInstaller_3.1.7.0_gw-overseas12_all_1712735105.exe
Size

5.3MB
MD5

fbd9ad001bb2719f574c0705c5de05fb
SHA1

d07e77a490ad677935ac8213b88237e94440e791
SHA256

f0031f9d7f25d4d29581879f62565a5a565995899adc60213f9e218147c78593
SHA512

5724e3f858ae7ea92ba4ce325f3f8f4b90ecc6d7c19476e2888c4b09f0913463191b977f71314300918cceb0a6ae0b80e29d3c70891e8aeb9314da233a929e96
SSDEEP

98304:oeZOuRuvqAgef1ndGaX6tJJQv2FKA75OpVclc02vDRZTEB:1ZOPNdo3u0jc02vVZoB

Score

5^/10

Malware Config

Signatures

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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	nemu-downloader.exe

Executes dropped EXE 4 IoCs

pid	Process
4228	nemu-downloader.exe
3776	ColaBoxChecker.exe
3412	HyperVChecker.exe
4220	HyperVChecker.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4228	nemu-downloader.exe
4228	nemu-downloader.exe
4228	nemu-downloader.exe
4228	nemu-downloader.exe

Suspicious behavior: LoadsDriver 4 IoCs

pid	Process
656	Process not Found
656	Process not Found
656	Process not Found
656	Process not Found

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4228	nemu-downloader.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4000 wrote to memory of 4228	4000	MuMuInstaller_3.1.7.0_gw-overseas12_all_1712735105.exe	84
PID 4000 wrote to memory of 4228	4000	MuMuInstaller_3.1.7.0_gw-overseas12_all_1712735105.exe	84
PID 4000 wrote to memory of 4228	4000	MuMuInstaller_3.1.7.0_gw-overseas12_all_1712735105.exe	84
PID 4228 wrote to memory of 3776	4228	nemu-downloader.exe	85
PID 4228 wrote to memory of 3776	4228	nemu-downloader.exe	85
PID 4228 wrote to memory of 3776	4228	nemu-downloader.exe	85
PID 4228 wrote to memory of 3412	4228	nemu-downloader.exe	89
PID 4228 wrote to memory of 3412	4228	nemu-downloader.exe	89
PID 4228 wrote to memory of 4220	4228	nemu-downloader.exe	91
PID 4228 wrote to memory of 4220	4228	nemu-downloader.exe	91

C:\Users\Admin\AppData\Local\Temp\MuMuInstaller_3.1.7.0_gw-overseas12_all_1712735105.exe
"C:\Users\Admin\AppData\Local\Temp\MuMuInstaller_3.1.7.0_gw-overseas12_all_1712735105.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4000
- C:\Users\Admin\AppData\Local\Temp\7z76510FA0\nemu-downloader.exe
  C:\Users\Admin\AppData\Local\Temp\7z76510FA0\nemu-downloader.exe
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:4228
- - C:\Users\Admin\AppData\Local\Temp\7z76510FA0\ColaBoxChecker.exe
    "C:\Users\Admin\AppData\Local\Temp\7z76510FA0\ColaBoxChecker.exe" checker /baseboard
    3⤵
    - Executes dropped EXE
    PID:3776
- - C:\Users\Admin\AppData\Local\Temp\7z76510FA0\HyperVChecker.exe
    "C:\Users\Admin\AppData\Local\Temp\7z76510FA0\HyperVChecker.exe"
    3⤵
    - Executes dropped EXE
    PID:3412
- - C:\Users\Admin\AppData\Local\Temp\7z76510FA0\HyperVChecker.exe
    "C:\Users\Admin\AppData\Local\Temp\7z76510FA0\HyperVChecker.exe"
    3⤵
    - Executes dropped EXE
    PID:4220

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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:\Users\Admin\AppData\Local\Temp\7z76510FA0\ColaBoxChecker.exe

Filesize
4.0MB

MD5
839708e3f96cf055436fa08d6205263c

SHA1
a4579f8cb6b80fe3fd50099794f63eb51be3292f

SHA256
1373c5d006a5dbcd9b86cfff9a37616f1245d1333c4adcefc7cd18926b98d752

SHA512
ece67e031e06a0442d935e7d81d0eed57ae92b348b5d104423577478ce226e4a4bde834c54e31d33bfe6f574fb7798ba96886d9e8edb738edee6e7c9c43054cd

Download Submit
C:\Users\Admin\AppData\Local\Temp\7z76510FA0\HyperVChecker.exe

Filesize
117KB

MD5
dbd84c6083e4badf4741d95ba3c9b5f8

SHA1
4a555adf8e0459bfd1145d9bd8d91b3fff94aad0

SHA256
9ff467bc5a1c377102d25da9fa9c24dcc4375f456510f71584f0714fdfb2af39

SHA512
fb5fe74f64254609e07d6642acf904562bb905cd7c14c6f85ba31bcdbaf06686c0586609ec4f5d2f8f55ff90334dcbb774a3a6e78df74bf1b1d0cd03dec21870

Download Submit
C:\Users\Admin\AppData\Local\Temp\7z76510FA0\baseboard

Filesize
114B

MD5
dd71c2f2ed3ebcb01bd459ecd2432dc7

SHA1
f56e8aac71871333a97bbee6c73123586f223e07

SHA256
8870fbe07c95ce216dbfc58d9740ba935e0cf4beb7715b296bf86d75463b1051

SHA512
c1f7144a9e5e12ea9209e48e0d0560f01f7e25455c06c8aa6e916ec51dc06342aeb3495df6012be996b597517d15d3eaab8ce950b2db630935b08f8e5e2e9a89

Download Submit
C:\Users\Admin\AppData\Local\Temp\7z76510FA0\config.ini

Filesize
346B

MD5
d00fb4c61a255b58ff09886c6c72461b

SHA1
4e4f7d7ae36f67a4d6fc8479f8400b3eb769e978

SHA256
77dec4d79e1e844a2156f101defc0fc81c138a989e8ba1c722c58feb91b3cd4a

SHA512
8494ab9fe0594f3ff7b0893ca3e25d6d0a706e546e92c5b662aa864affcefe5f9721a6a95f37f40cdacf39d27a23e2b3cd5dbca4d7b8909cd7c186209d4b46db

Download Submit
C:\Users\Admin\AppData\Local\Temp\7z76510FA0\nemu-downloader.exe

Filesize
3.2MB

MD5
cdf8047ceae80d9cd9eb798a57bf6084

SHA1
8e7971401fada3099aed61849745fda37e1c0d32

SHA256
1f01a9abac64fae72e0a253ad9ffe2d62cd2967c1c2bc90fb956ac446fe2b11e

SHA512
ac366f38f39b935110192d1355147392ced5a21966cc22386804356dce24b2da7971a6a60d675689f93d74014d961bfb3b0c13cf06809b9f9feef580045e20dc

Download Submit
C:\Users\Admin\AppData\Local\Temp\7z76510FA0\skin.zip

Filesize
509KB

MD5
ecb43530caf9566c1b76d5af8d2097f1

SHA1
34562ada66cd1501fcb7411a1e1d86729fd7fdc0

SHA256
a12381f97aee2d91568f44b23e866ccc99f0ae5e5961f318ed24b72f4f5da80a

SHA512
4a243c0bc4dbaf892bee91ea7eff9e6a7732d3aa2df5bebd9a4bea2859a30a8511945ce3bb823f7ef921f2e1a98906fb676fce85f25fd5908646b3a2f5d02563

Download Submit

Analysis

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