nymaim | cda526e45d7eb0953447dc33990d166f1dbf7078dd711fe0947c9d7f7d5a047a

General

Target

file.exe
Size

2.9MB
MD5

3956f1c50cf6c59c7ecaeddf78ba08b7
SHA1

bcaa3e674c404567845099cdc0dfaa86e727c741
SHA256

cda526e45d7eb0953447dc33990d166f1dbf7078dd711fe0947c9d7f7d5a047a
SHA512

f8c21b0aec9068781ec266c971498036be7db30ffb1f76470b66de72750d7d296aa6486dbd7b55f04101909fbf8002a804b4f1fb22b5e7b7473dd810556b8e7d
SSDEEP

49152:Z269CmNAPJy8xyveKKjenpsZE0DQ7awK2zRq7IwlnRZjtdCqWawtHnark83A5hq:MeCmN2dxyGKYeneEhDdM0wlzXxWaCHa9

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

C2

45.139.105.171

85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim

Executes dropped EXE 3 IoCs

pid	Process
4472	is-QQA5M.tmp
3460	frsearcher70.exe
1300	wXbFzBGRohPjlT.exe

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	frsearcher70.exe

Loads dropped DLL 1 IoCs

pid	Process
4472	is-QQA5M.tmp

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Program Files directory 12 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\frSearcher\is-KEJ1B.tmp	is-QQA5M.tmp
File created	C:\Program Files (x86)\frSearcher\is-HKHN3.tmp	is-QQA5M.tmp
File created	C:\Program Files (x86)\frSearcher\unins000.dat	is-QQA5M.tmp
File created	C:\Program Files (x86)\frSearcher\is-2796O.tmp	is-QQA5M.tmp
File created	C:\Program Files (x86)\frSearcher\is-FK8KI.tmp	is-QQA5M.tmp
File created	C:\Program Files (x86)\frSearcher\is-BOB7K.tmp	is-QQA5M.tmp
File opened for modification	C:\Program Files (x86)\frSearcher\unins000.dat	is-QQA5M.tmp
File opened for modification	C:\Program Files (x86)\frSearcher\frsearcher70.exe	is-QQA5M.tmp
File created	C:\Program Files (x86)\frSearcher\is-GCJA0.tmp	is-QQA5M.tmp
File created	C:\Program Files (x86)\frSearcher\is-6QLHM.tmp	is-QQA5M.tmp
File created	C:\Program Files (x86)\frSearcher\is-54LGK.tmp	is-QQA5M.tmp
File created	C:\Program Files (x86)\frSearcher\is-J7GMH.tmp	is-QQA5M.tmp

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
2344	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3460	frsearcher70.exe
3460	frsearcher70.exe
3460	frsearcher70.exe
3460	frsearcher70.exe
3460	frsearcher70.exe
3460	frsearcher70.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2344	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 748 wrote to memory of 4472	748	file.exe	78
PID 748 wrote to memory of 4472	748	file.exe	78
PID 748 wrote to memory of 4472	748	file.exe	78
PID 4472 wrote to memory of 3460	4472	is-QQA5M.tmp	79
PID 4472 wrote to memory of 3460	4472	is-QQA5M.tmp	79
PID 4472 wrote to memory of 3460	4472	is-QQA5M.tmp	79
PID 3460 wrote to memory of 1300	3460	frsearcher70.exe	84
PID 3460 wrote to memory of 1300	3460	frsearcher70.exe	84
PID 3460 wrote to memory of 1300	3460	frsearcher70.exe	84
PID 3460 wrote to memory of 1588	3460	frsearcher70.exe	89
PID 3460 wrote to memory of 1588	3460	frsearcher70.exe	89
PID 3460 wrote to memory of 1588	3460	frsearcher70.exe	89
PID 1588 wrote to memory of 2344	1588	cmd.exe	91
PID 1588 wrote to memory of 2344	1588	cmd.exe	91
PID 1588 wrote to memory of 2344	1588	cmd.exe	91

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:748
- C:\Users\Admin\AppData\Local\Temp\is-UJFMT.tmp\is-QQA5M.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-UJFMT.tmp\is-QQA5M.tmp" /SL4 $E0048 "C:\Users\Admin\AppData\Local\Temp\file.exe" 2773762 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:4472
- - C:\Program Files (x86)\frSearcher\frsearcher70.exe
    "C:\Program Files (x86)\frSearcher\frsearcher70.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:3460
  - - C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\wXbFzBGRohPjlT.exe
      4⤵
      Executes dropped EXE
      PID:1300
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "frsearcher70.exe" /f & erase "C:\Program Files (x86)\frSearcher\frsearcher70.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1588
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "frsearcher70.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:2344

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\frSearcher\frsearcher70.exe

Filesize
4.3MB

MD5
95c8378bd6dfb04441bced48f8e8ff82

SHA1
19ac089d3f4513d90f700ae73f7ad566a52b0ed6

SHA256
2a7f423f0ff6e1862966bb9a5c7a7ccf24e0aaf96df81684cde4b2ff795bda76

SHA512
dc77ab56b8f9656a5a386691380a419a6f7a8ffbd1984188c9bd7190b4b3f3bd3db8730bbfa1618bfa59375c178fa7fc82dbe4b102d30e4c4028c7f64e19f037

Download Submit
C:\Program Files (x86)\frSearcher\frsearcher70.exe

Filesize
4.3MB

MD5
95c8378bd6dfb04441bced48f8e8ff82

SHA1
19ac089d3f4513d90f700ae73f7ad566a52b0ed6

SHA256
2a7f423f0ff6e1862966bb9a5c7a7ccf24e0aaf96df81684cde4b2ff795bda76

SHA512
dc77ab56b8f9656a5a386691380a419a6f7a8ffbd1984188c9bd7190b4b3f3bd3db8730bbfa1618bfa59375c178fa7fc82dbe4b102d30e4c4028c7f64e19f037

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-RI9EA.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-UJFMT.tmp\is-QQA5M.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-UJFMT.tmp\is-QQA5M.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\wXbFzBGRohPjlT.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\wXbFzBGRohPjlT.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/748-156-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/748-132-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/748-147-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/748-134-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3460-143-0x0000000000400000-0x0000000001649000-memory.dmp

Filesize
18.3MB

Download
memory/3460-148-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/3460-152-0x0000000000400000-0x0000000001649000-memory.dmp

Filesize
18.3MB

Download
memory/3460-142-0x0000000000400000-0x0000000001649000-memory.dmp

Filesize
18.3MB

Download
memory/3460-155-0x0000000000400000-0x0000000001649000-memory.dmp

Filesize
18.3MB

Download

Analysis

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