nymaim | 5fa1f53785578cd6cafe5b625be0030e0e133aecd3a7d4d6987cbd4c867b897a

Analysis

max time kernel
262s
max time network
350s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
26/11/2022, 13:01

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General

Target
file.exe
Size 2.1MB
Sample221126-p88casec29
SHA256 5fa1f53785578cd6cafe5b625be0030e0e133aecd3a7d4d6987cbd4c867b897a
MD5 98ed15c44dd4babe4bc2718db9d9384c
SHA1 e2d89d7a2de7c120b882b7efb1a569ef12bac6d2
SHA512 eead2dcf1501814dd29a338742141834884bd6f627080d090deed36d61270ead361ed66486b153a756e0c6043b732286c85b7aa35be562f772402690ce27163c
SSDEEP 49152:IxoomgfM/Ymb8QhglXTxhJwiMggCHcAG5cyv:IxopEmgdTL+vggC8Xcyv
MD5 SHA1 SHA512 SSDEEP

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

pid	Process
432	is-C9286.tmp
1328	PrintFolders.exe
1532	mRZxqW.exe

Loads dropped DLL 10 IoCs

pid	Process
1372	file.exe
432	is-C9286.tmp
432	is-C9286.tmp
432	is-C9286.tmp
432	is-C9286.tmp
1328	PrintFolders.exe
1328	PrintFolders.exe
1328	PrintFolders.exe
1532	mRZxqW.exe
1532	mRZxqW.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

Drops file in Program Files directory 9 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\PrintFolders\unins000.dat	is-C9286.tmp
File created	C:\Program Files (x86)\PrintFolders\is-3COD6.tmp	is-C9286.tmp
File created	C:\Program Files (x86)\PrintFolders\is-IFU46.tmp	is-C9286.tmp
File created	C:\Program Files (x86)\PrintFolders\is-O0BJ8.tmp	is-C9286.tmp
File created	C:\Program Files (x86)\PrintFolders\is-EPAP7.tmp	is-C9286.tmp
File created	C:\Program Files (x86)\PrintFolders\is-MDE3B.tmp	is-C9286.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\PrintFolders.exe	is-C9286.tmp
File created	C:\Program Files (x86)\PrintFolders\is-FAN8A.tmp	is-C9286.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-C9286.tmp

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1328	PrintFolders.exe
1328	PrintFolders.exe
1328	PrintFolders.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1372 wrote to memory of 432	1372	file.exe	28
PID 1372 wrote to memory of 432	1372	file.exe	28
PID 1372 wrote to memory of 432	1372	file.exe	28
PID 1372 wrote to memory of 432	1372	file.exe	28
PID 1372 wrote to memory of 432	1372	file.exe	28
PID 1372 wrote to memory of 432	1372	file.exe	28
PID 1372 wrote to memory of 432	1372	file.exe	28
PID 432 wrote to memory of 1328	432	is-C9286.tmp	29
PID 432 wrote to memory of 1328	432	is-C9286.tmp	29
PID 432 wrote to memory of 1328	432	is-C9286.tmp	29
PID 432 wrote to memory of 1328	432	is-C9286.tmp	29
PID 432 wrote to memory of 1328	432	is-C9286.tmp	29
PID 432 wrote to memory of 1328	432	is-C9286.tmp	29
PID 432 wrote to memory of 1328	432	is-C9286.tmp	29
PID 1328 wrote to memory of 1532	1328	PrintFolders.exe	30
PID 1328 wrote to memory of 1532	1328	PrintFolders.exe	30
PID 1328 wrote to memory of 1532	1328	PrintFolders.exe	30
PID 1328 wrote to memory of 1532	1328	PrintFolders.exe	30
PID 1328 wrote to memory of 1532	1328	PrintFolders.exe	30
PID 1328 wrote to memory of 1532	1328	PrintFolders.exe	30
PID 1328 wrote to memory of 1532	1328	PrintFolders.exe	30

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:1372
- C:\Users\Admin\AppData\Local\Temp\is-1B4LA.tmp\is-C9286.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-1B4LA.tmp\is-C9286.tmp" /SL4 $90122 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1930694 51712
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:432
- - C:\Program Files (x86)\PrintFolders\PrintFolders.exe
    "C:\Program Files (x86)\PrintFolders\PrintFolders.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1328
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\mRZxqW.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      PID:1532

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

PrintFolders.exe

Path C:\Program Files (x86)\PrintFolders\PrintFolders.exe
Size 3.3MB
SHA256 f37dc1067007cd7f14a33c7c92b53cb362dd6e1f4f84bb30933ac6f8ee5bb508
MD5 a1b53f50c0f5b89b883a4a054ee9d29c
SHA1 74c857f71bfd14acfdb78c838d4610b6932f3677
SHA512 08b6ac9a04ceb9cfe57038894099660774b7dd22175f4caf0d8da5d2b8645421e82bdcc0b5cd2dd467de8329b34ba2cb7e6ebfffa8b471cc4390f5d94a15c928
SSDEEP 49152:Qxxhe4IUORv4t+G3pmKW0GkIgDaRLi6kBYTd75UkFcU:Qxxhe4IUORvA+WpNWgIWaE6SYTdV/FcU
MD5 SHA1 SHA512 SSDEEP

Submit Download

PrintFolders.exe

Path C:\Program Files (x86)\PrintFolders\PrintFolders.exe
Size 3.3MB
SHA256 f37dc1067007cd7f14a33c7c92b53cb362dd6e1f4f84bb30933ac6f8ee5bb508
MD5 a1b53f50c0f5b89b883a4a054ee9d29c
SHA1 74c857f71bfd14acfdb78c838d4610b6932f3677
SHA512 08b6ac9a04ceb9cfe57038894099660774b7dd22175f4caf0d8da5d2b8645421e82bdcc0b5cd2dd467de8329b34ba2cb7e6ebfffa8b471cc4390f5d94a15c928
SSDEEP 49152:Qxxhe4IUORv4t+G3pmKW0GkIgDaRLi6kBYTd75UkFcU:Qxxhe4IUORvA+WpNWgIWaE6SYTdV/FcU
MD5 SHA1 SHA512 SSDEEP

Submit Download

is-C9286.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-1B4LA.tmp\is-C9286.tmp
Size 643KB
SHA256 b5cd942dd7019c1cda1715e4ce942094c41ad1e7bc7c5f63fe3ab7d97bc5a021
MD5 363a4d2aa5d6cf5cbb2267cccf0c4436
SHA1 a4cdb756698ed28f522956166a6292e9e309dd9c
SHA512 b5929be6e258a63557f376b50a40f6d465cbd372a88e7dcae7944faacb9181cd55873f52dee99cee2e3705596b3b55cb6f784db800f5a32f06e63b9ead3e7c70
SSDEEP 12288:Jh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrv4xp:f5NoqWolrP837JzHvA6yknyWFxv4xp
MD5 SHA1 SHA512 SSDEEP

Submit Download

is-C9286.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-1B4LA.tmp\is-C9286.tmp
Size 643KB
SHA256 b5cd942dd7019c1cda1715e4ce942094c41ad1e7bc7c5f63fe3ab7d97bc5a021
MD5 363a4d2aa5d6cf5cbb2267cccf0c4436
SHA1 a4cdb756698ed28f522956166a6292e9e309dd9c
SHA512 b5929be6e258a63557f376b50a40f6d465cbd372a88e7dcae7944faacb9181cd55873f52dee99cee2e3705596b3b55cb6f784db800f5a32f06e63b9ead3e7c70
SSDEEP 12288:Jh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrv4xp:f5NoqWolrP837JzHvA6yknyWFxv4xp
MD5 SHA1 SHA512 SSDEEP

Submit Download

mRZxqW.exe

Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\mRZxqW.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

mRZxqW.exe

Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\mRZxqW.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

PrintFolders.exe

Path \Program Files (x86)\PrintFolders\PrintFolders.exe
Size 3.3MB
SHA256 f37dc1067007cd7f14a33c7c92b53cb362dd6e1f4f84bb30933ac6f8ee5bb508
MD5 a1b53f50c0f5b89b883a4a054ee9d29c
SHA1 74c857f71bfd14acfdb78c838d4610b6932f3677
SHA512 08b6ac9a04ceb9cfe57038894099660774b7dd22175f4caf0d8da5d2b8645421e82bdcc0b5cd2dd467de8329b34ba2cb7e6ebfffa8b471cc4390f5d94a15c928
SSDEEP 49152:Qxxhe4IUORv4t+G3pmKW0GkIgDaRLi6kBYTd75UkFcU:Qxxhe4IUORvA+WpNWgIWaE6SYTdV/FcU
MD5 SHA1 SHA512 SSDEEP

Submit Download

PrintFolders.exe

Path \Program Files (x86)\PrintFolders\PrintFolders.exe
Size 3.3MB
SHA256 f37dc1067007cd7f14a33c7c92b53cb362dd6e1f4f84bb30933ac6f8ee5bb508
MD5 a1b53f50c0f5b89b883a4a054ee9d29c
SHA1 74c857f71bfd14acfdb78c838d4610b6932f3677
SHA512 08b6ac9a04ceb9cfe57038894099660774b7dd22175f4caf0d8da5d2b8645421e82bdcc0b5cd2dd467de8329b34ba2cb7e6ebfffa8b471cc4390f5d94a15c928
SSDEEP 49152:Qxxhe4IUORv4t+G3pmKW0GkIgDaRLi6kBYTd75UkFcU:Qxxhe4IUORvA+WpNWgIWaE6SYTdV/FcU
MD5 SHA1 SHA512 SSDEEP

Submit Download

PrintFolders.exe

Path \Program Files (x86)\PrintFolders\PrintFolders.exe
Size 3.3MB
SHA256 f37dc1067007cd7f14a33c7c92b53cb362dd6e1f4f84bb30933ac6f8ee5bb508
MD5 a1b53f50c0f5b89b883a4a054ee9d29c
SHA1 74c857f71bfd14acfdb78c838d4610b6932f3677
SHA512 08b6ac9a04ceb9cfe57038894099660774b7dd22175f4caf0d8da5d2b8645421e82bdcc0b5cd2dd467de8329b34ba2cb7e6ebfffa8b471cc4390f5d94a15c928
SSDEEP 49152:Qxxhe4IUORv4t+G3pmKW0GkIgDaRLi6kBYTd75UkFcU:Qxxhe4IUORvA+WpNWgIWaE6SYTdV/FcU
MD5 SHA1 SHA512 SSDEEP

Submit Download

is-C9286.tmp

Path \Users\Admin\AppData\Local\Temp\is-1B4LA.tmp\is-C9286.tmp
Size 643KB
SHA256 b5cd942dd7019c1cda1715e4ce942094c41ad1e7bc7c5f63fe3ab7d97bc5a021
MD5 363a4d2aa5d6cf5cbb2267cccf0c4436
SHA1 a4cdb756698ed28f522956166a6292e9e309dd9c
SHA512 b5929be6e258a63557f376b50a40f6d465cbd372a88e7dcae7944faacb9181cd55873f52dee99cee2e3705596b3b55cb6f784db800f5a32f06e63b9ead3e7c70
SSDEEP 12288:Jh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrv4xp:f5NoqWolrP837JzHvA6yknyWFxv4xp
MD5 SHA1 SHA512 SSDEEP

Submit Download

_iscrypt.dll

Path \Users\Admin\AppData\Local\Temp\is-HOCI8.tmp\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

Submit Download

_shfoldr.dll

Path \Users\Admin\AppData\Local\Temp\is-HOCI8.tmp\_isetup\_shfoldr.dll
Size 22KB
SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
MD5 92dc6ef532fbb4a5c3201469a5b5eb63
SHA1 3e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA512 9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
SSDEEP 384:+Vm08QoKkiWZ76UJuP71W55iWHHoSHigH2euwsHTGHVb+VHHmnH+aHjHqLHxmoq1:2m08QotiCjJuPGw4
MD5 SHA1 SHA512 SSDEEP

Submit Download

_shfoldr.dll

Path \Users\Admin\AppData\Local\Temp\is-HOCI8.tmp\_isetup\_shfoldr.dll
Size 22KB
SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
MD5 92dc6ef532fbb4a5c3201469a5b5eb63
SHA1 3e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA512 9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
SSDEEP 384:+Vm08QoKkiWZ76UJuP71W55iWHHoSHigH2euwsHTGHVb+VHHmnH+aHjHqLHxmoq1:2m08QotiCjJuPGw4
MD5 SHA1 SHA512 SSDEEP

Submit Download

mRZxqW.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\mRZxqW.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

mRZxqW.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\mRZxqW.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

mRZxqW.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\mRZxqW.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/432-76-0x0000000002F10000-0x0000000004059000-memory.dmp

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memory/432-69-0x0000000002F10000-0x0000000004059000-memory.dmp

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memory/1328-79-0x0000000001AD0000-0x0000000002C19000-memory.dmp

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memory/1328-77-0x0000000000400000-0x0000000001549000-memory.dmp

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memory/1328-75-0x0000000001AD0000-0x0000000002C19000-memory.dmp

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memory/1328-78-0x0000000000400000-0x0000000001549000-memory.dmp

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memory/1328-80-0x0000000000400000-0x0000000001549000-memory.dmp

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memory/1328-84-0x0000000000400000-0x0000000001549000-memory.dmp

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memory/1328-70-0x0000000000400000-0x0000000001549000-memory.dmp

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memory/1328-89-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/1372-54-0x0000000075D11000-0x0000000075D13000-memory.dmp

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memory/1372-57-0x0000000000400000-0x0000000000413000-memory.dmp

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memory/1372-55-0x0000000000400000-0x0000000000413000-memory.dmp

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