nymaim | cd7e585c5210c79d6970caf6a55bb27bcdf1776e4a99a81974159a5a2c9ee58d

Analysis

max time kernel
53s
max time network
54s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
11-01-2023 17:01

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General

Target

file.exe
Size

1.2MB
MD5

85a1e598ffd0f3278ac583bf1a13f5c1
SHA1

54803894af791506f75c6c44b1e07d89c8bae9d6
SHA256

cd7e585c5210c79d6970caf6a55bb27bcdf1776e4a99a81974159a5a2c9ee58d
SHA512

ebca9ba5350c00b794082e4b55140d37fe1cb478d7d96027ad355e254d4c73eee629b767903cc74ec61eda54376b9e5a6054762cb1a4de25c9a47f7a24606183
SSDEEP

24576:q20ID/3U1fOQHD5DAb4WhjJf5JszgRz+hYxPgXC75ld1qSVpk:q2z3Yw4+f5Jf9m2d1qapk

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

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

Processes:

file.tmpLitFiles137.exenkJF7u.exe

pid process

1668 file.tmp
520 LitFiles137.exe
916 nkJF7u.exe
Loads dropped DLL 6 IoCs

Processes:

file.exefile.tmpLitFiles137.exe

pid process

1540 file.exe
1668 file.tmp
1668 file.tmp
1668 file.tmp
1668 file.tmp
520 LitFiles137.exe
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

pid	process
1668	file.tmp
520	LitFiles137.exe
916	nkJF7u.exe

pid	process
1540	file.exe
1668	file.tmp
1668	file.tmp
1668	file.tmp
1668	file.tmp
520	LitFiles137.exe

Drops file in Program Files directory 17 IoCs

Processes:

file.tmp

description	ioc	process
File created	C:\Program Files (x86)\Split Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Split Files\is-B8V20.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-NIG0H.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Split Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-IJI35.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-LHFDE.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-QDTHT.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-9OEDT.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-PT2BF.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-FOORJ.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-AB9TB.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-N99SD.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-S6NIM.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-I3VHD.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-QKCL8.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-BGRHQ.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Split Files\LitFiles137.exe	file.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

Processes:

taskkill.exe

pid process

756 taskkill.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

LitFiles137.exe

pid process

520 LitFiles137.exe
520 LitFiles137.exe
520 LitFiles137.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 756 taskkill.exe

pid	process
756	taskkill.exe

pid	process
520	LitFiles137.exe
520	LitFiles137.exe
520	LitFiles137.exe

description	pid	process
Token: SeDebugPrivilege	756	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

file.exefile.tmpLitFiles137.execmd.exe

description	pid	process	target process
PID 1540 wrote to memory of 1668	1540	file.exe	file.tmp
PID 1540 wrote to memory of 1668	1540	file.exe	file.tmp
PID 1540 wrote to memory of 1668	1540	file.exe	file.tmp
PID 1540 wrote to memory of 1668	1540	file.exe	file.tmp
PID 1540 wrote to memory of 1668	1540	file.exe	file.tmp
PID 1540 wrote to memory of 1668	1540	file.exe	file.tmp
PID 1540 wrote to memory of 1668	1540	file.exe	file.tmp
PID 1668 wrote to memory of 520	1668	file.tmp	LitFiles137.exe
PID 1668 wrote to memory of 520	1668	file.tmp	LitFiles137.exe
PID 1668 wrote to memory of 520	1668	file.tmp	LitFiles137.exe
PID 1668 wrote to memory of 520	1668	file.tmp	LitFiles137.exe
PID 520 wrote to memory of 916	520	LitFiles137.exe	nkJF7u.exe
PID 520 wrote to memory of 916	520	LitFiles137.exe	nkJF7u.exe
PID 520 wrote to memory of 916	520	LitFiles137.exe	nkJF7u.exe
PID 520 wrote to memory of 916	520	LitFiles137.exe	nkJF7u.exe
PID 520 wrote to memory of 1652	520	LitFiles137.exe	cmd.exe
PID 520 wrote to memory of 1652	520	LitFiles137.exe	cmd.exe
PID 520 wrote to memory of 1652	520	LitFiles137.exe	cmd.exe
PID 520 wrote to memory of 1652	520	LitFiles137.exe	cmd.exe
PID 1652 wrote to memory of 756	1652	cmd.exe	taskkill.exe
PID 1652 wrote to memory of 756	1652	cmd.exe	taskkill.exe
PID 1652 wrote to memory of 756	1652	cmd.exe	taskkill.exe
PID 1652 wrote to memory of 756	1652	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1540
- C:\Users\Admin\AppData\Local\Temp\is-GBTLN.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-GBTLN.tmp\file.tmp" /SL5="$8012C,1062841,212992,C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:1668
- - C:\Program Files (x86)\Split Files\LitFiles137.exe
    "C:\Program Files (x86)\Split Files\LitFiles137.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:520
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\nkJF7u.exe
      4⤵
      Executes dropped EXE
      PID:916
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "LitFiles137.exe" /f & erase "C:\Program Files (x86)\Split Files\LitFiles137.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1652
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "LitFiles137.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:756

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Split Files\LitFiles137.exe

Filesize
1.8MB

MD5
2f16fd1f3e7c9975eef334cd8d3bdfde

SHA1
2e634bac1fffaef3748423df2b18a875dc97ba77

SHA256
45cb1bafdaa0746e54794b25373293364169ff106aa4b6c88723783a123528fc

SHA512
d0fce5d24a9a6d6b1653ac93837b6678c13d6958de0b1babd83808f7d2928782e9b4aa48e550a2252a218838d09200dc3bdd6a1a3dd44ac9c74ee02d4216bd3f

Download Submit
C:\Program Files (x86)\Split Files\LitFiles137.exe

Filesize
1.8MB

MD5
2f16fd1f3e7c9975eef334cd8d3bdfde

SHA1
2e634bac1fffaef3748423df2b18a875dc97ba77

SHA256
45cb1bafdaa0746e54794b25373293364169ff106aa4b6c88723783a123528fc

SHA512
d0fce5d24a9a6d6b1653ac93837b6678c13d6958de0b1babd83808f7d2928782e9b4aa48e550a2252a218838d09200dc3bdd6a1a3dd44ac9c74ee02d4216bd3f

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-GBTLN.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-GBTLN.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\nkJF7u.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\Split Files\LitFiles137.exe

Filesize
1.8MB

MD5
2f16fd1f3e7c9975eef334cd8d3bdfde

SHA1
2e634bac1fffaef3748423df2b18a875dc97ba77

SHA256
45cb1bafdaa0746e54794b25373293364169ff106aa4b6c88723783a123528fc

SHA512
d0fce5d24a9a6d6b1653ac93837b6678c13d6958de0b1babd83808f7d2928782e9b4aa48e550a2252a218838d09200dc3bdd6a1a3dd44ac9c74ee02d4216bd3f

Download Submit
\Users\Admin\AppData\Local\Temp\is-8TQBT.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-8TQBT.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-8TQBT.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-GBTLN.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\nkJF7u.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/520-70-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/520-77-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/520-85-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/520-82-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/520-71-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/520-73-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/520-66-0x0000000000000000-mapping.dmp

Download
memory/756-84-0x0000000000000000-mapping.dmp

Download
memory/916-75-0x0000000000000000-mapping.dmp

Download
memory/1540-68-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/1540-54-0x0000000075931000-0x0000000075933000-memory.dmp

Filesize
8KB

Download
memory/1540-86-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/1540-55-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/1652-83-0x0000000000000000-mapping.dmp

Download
memory/1668-58-0x0000000000000000-mapping.dmp

Download
memory/1668-81-0x00000000035C0000-0x0000000004582000-memory.dmp

Filesize
15.8MB

Download
memory/1668-69-0x00000000035C0000-0x0000000004582000-memory.dmp

Filesize
15.8MB

Download